Home / 1,255,321,271.80-1,882,981,907.70-393,676,881.40

Finding the Fourth Proportional to 1,255,321,271.80, 1,882,981,907.70 and 393,676,881.40

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Solution

The fourth proportional to 1,255,321,271.80, 1,882,981,907.70 and 393,676,881.40 is: 590,515,322.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255,321,271.80 : 1,882,981,907.70 = 393,676,881.40 : x
  2. Step 2: Convert to fraction form
    1,255,321,271.80/1,882,981,907.70 = 393,676,881.40/x
  3. Step 3: Cross multiply
    1,255,321,271.80x = 1,882,981,907.70 × 393,676,881.40
  4. Step 4: Simplify right side
    1,255,321,271.80x = 741,286,445,155,958,656
  5. Step 5: Solve for x
    x = 741,286,445,155,958,656/1,255,321,271.80
  6. Step 6: Final answer
    x = 590,515,322.10

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Double scale
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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.