Home / 661,062,001.80-991,593,002.70-398,034,136.20

Finding the Fourth Proportional to 661,062,001.80, 991,593,002.70 and 398,034,136.20

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Solution

The fourth proportional to 661,062,001.80, 991,593,002.70 and 398,034,136.20 is: 597,051,204.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,062,001.80 : 991,593,002.70 = 398,034,136.20 : x
  2. Step 2: Convert to fraction form
    661,062,001.80/991,593,002.70 = 398,034,136.20/x
  3. Step 3: Cross multiply
    661,062,001.80x = 991,593,002.70 × 398,034,136.20
  4. Step 4: Simplify right side
    661,062,001.80x = 394,687,864,291,658,752
  5. Step 5: Solve for x
    x = 394,687,864,291,658,752/661,062,001.80
  6. Step 6: Final answer
    x = 597,051,204.30

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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.