Home / 1,121,009,977.80-1,681,514,966.70-383,834,880.68

Finding the Fourth Proportional to 1,121,009,977.80, 1,681,514,966.70 and 383,834,880.68

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Solution

The fourth proportional to 1,121,009,977.80, 1,681,514,966.70 and 383,834,880.68 is: 575,752,321.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,009,977.80 : 1,681,514,966.70 = 383,834,880.68 : x
  2. Step 2: Convert to fraction form
    1,121,009,977.80/1,681,514,966.70 = 383,834,880.68/x
  3. Step 3: Cross multiply
    1,121,009,977.80x = 1,681,514,966.70 × 383,834,880.68
  4. Step 4: Simplify right side
    1,121,009,977.80x = 645,424,096,596,521,088
  5. Step 5: Solve for x
    x = 645,424,096,596,521,088/1,121,009,977.80
  6. Step 6: Final answer
    x = 575,752,321.01

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Half scale
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Double scale
Find fourth proportional to 1,121,009,978.80, 1,681,514,968.20 and 383,834,881.68
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.