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Finding the Fourth Proportional to 485,775.57, 727,147.06 and 357,836.11

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Solution

The fourth proportional to 485,775.57, 727,147.06 and 357,836.11 is: 535,637.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,775.57 : 727,147.06 = 357,836.11 : x
  2. Step 2: Convert to fraction form
    485,775.57/727,147.06 = 357,836.11/x
  3. Step 3: Cross multiply
    485,775.57x = 727,147.06 × 357,836.11
  4. Step 4: Simplify right side
    485,775.57x = 260,199,472,635.88
  5. Step 5: Solve for x
    x = 260,199,472,635.88/485,775.57
  6. Step 6: Final answer
    x = 535,637.21

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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.