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Finding the Fourth Proportional to 485,572,004.80, 728,358,007.20 and 340,169,747.20

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Solution

The fourth proportional to 485,572,004.80, 728,358,007.20 and 340,169,747.20 is: 510,254,620.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,572,004.80 : 728,358,007.20 = 340,169,747.20 : x
  2. Step 2: Convert to fraction form
    485,572,004.80/728,358,007.20 = 340,169,747.20/x
  3. Step 3: Cross multiply
    485,572,004.80x = 728,358,007.20 × 340,169,747.20
  4. Step 4: Simplify right side
    485,572,004.80x = 247,765,359,180,319,776
  5. Step 5: Solve for x
    x = 247,765,359,180,319,776/485,572,004.80
  6. Step 6: Final answer
    x = 510,254,620.80

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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.