Home / 742,728,001.20-1,114,092,001.80-398,354,233.20

Finding the Fourth Proportional to 742,728,001.20, 1,114,092,001.80 and 398,354,233.20

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Solution

The fourth proportional to 742,728,001.20, 1,114,092,001.80 and 398,354,233.20 is: 597,531,349.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,728,001.20 : 1,114,092,001.80 = 398,354,233.20 : x
  2. Step 2: Convert to fraction form
    742,728,001.20/1,114,092,001.80 = 398,354,233.20/x
  3. Step 3: Cross multiply
    742,728,001.20x = 1,114,092,001.80 × 398,354,233.20
  4. Step 4: Simplify right side
    742,728,001.20x = 443,803,265,091,291,968
  5. Step 5: Solve for x
    x = 443,803,265,091,291,968/742,728,001.20
  6. Step 6: Final answer
    x = 597,531,349.80

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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.