Home / 454,301,959.20-681,452,938.80-427,428,103.20

Finding the Fourth Proportional to 454,301,959.20, 681,452,938.80 and 427,428,103.20

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Solution

The fourth proportional to 454,301,959.20, 681,452,938.80 and 427,428,103.20 is: 641,142,154.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,301,959.20 : 681,452,938.80 = 427,428,103.20 : x
  2. Step 2: Convert to fraction form
    454,301,959.20/681,452,938.80 = 427,428,103.20/x
  3. Step 3: Cross multiply
    454,301,959.20x = 681,452,938.80 × 427,428,103.20
  4. Step 4: Simplify right side
    454,301,959.20x = 291,272,137,051,349,632
  5. Step 5: Solve for x
    x = 291,272,137,051,349,632/454,301,959.20
  6. Step 6: Final answer
    x = 641,142,154.80

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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.