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Finding the Fourth Proportional to 518,565.60, 777,848.40 and 487,072.80

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Solution

The fourth proportional to 518,565.60, 777,848.40 and 487,072.80 is: 730,609.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,565.60 : 777,848.40 = 487,072.80 : x
  2. Step 2: Convert to fraction form
    518,565.60/777,848.40 = 487,072.80/x
  3. Step 3: Cross multiply
    518,565.60x = 777,848.40 × 487,072.80
  4. Step 4: Simplify right side
    518,565.60x = 378,868,798,163.52
  5. Step 5: Solve for x
    x = 378,868,798,163.52/518,565.60
  6. Step 6: Final answer
    x = 730,609.20

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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.