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Finding the Fourth Proportional to 485,517,619.20, 728,276,428.80 and 337,564,444.80

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Solution

The fourth proportional to 485,517,619.20, 728,276,428.80 and 337,564,444.80 is: 506,346,667.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,517,619.20 : 728,276,428.80 = 337,564,444.80 : x
  2. Step 2: Convert to fraction form
    485,517,619.20/728,276,428.80 = 337,564,444.80/x
  3. Step 3: Cross multiply
    485,517,619.20x = 728,276,428.80 × 337,564,444.80
  4. Step 4: Simplify right side
    485,517,619.20x = 245,840,228,348,798,720
  5. Step 5: Solve for x
    x = 245,840,228,348,798,720/485,517,619.20
  6. Step 6: Final answer
    x = 506,346,667.20

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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.