Home / 1,121,009,651.70-1,681,514,477.55-654,191,877.30

Finding the Fourth Proportional to 1,121,009,651.70, 1,681,514,477.55 and 654,191,877.30

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Solution

The fourth proportional to 1,121,009,651.70, 1,681,514,477.55 and 654,191,877.30 is: 981,287,815.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,009,651.70 : 1,681,514,477.55 = 654,191,877.30 : x
  2. Step 2: Convert to fraction form
    1,121,009,651.70/1,681,514,477.55 = 654,191,877.30/x
  3. Step 3: Cross multiply
    1,121,009,651.70x = 1,681,514,477.55 × 654,191,877.30
  4. Step 4: Simplify right side
    1,121,009,651.70x = 1,100,033,112,775,563,136
  5. Step 5: Solve for x
    x = 1,100,033,112,775,563,136/1,121,009,651.70
  6. Step 6: Final answer
    x = 981,287,815.95

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Double scale
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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.