Home / 661,607,402.40-992,411,103.60-443,929,168.80

Finding the Fourth Proportional to 661,607,402.40, 992,411,103.60 and 443,929,168.80

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Solution

The fourth proportional to 661,607,402.40, 992,411,103.60 and 443,929,168.80 is: 665,893,753.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,607,402.40 : 992,411,103.60 = 443,929,168.80 : x
  2. Step 2: Convert to fraction form
    661,607,402.40/992,411,103.60 = 443,929,168.80/x
  3. Step 3: Cross multiply
    661,607,402.40x = 992,411,103.60 × 443,929,168.80
  4. Step 4: Simplify right side
    661,607,402.40x = 440,560,236,329,038,720
  5. Step 5: Solve for x
    x = 440,560,236,329,038,720/661,607,402.40
  6. Step 6: Final answer
    x = 665,893,753.20

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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.