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Finding the Fourth Proportional to 518,323.96, 775,730.40 and 318,770.92

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Solution

The fourth proportional to 518,323.96, 775,730.40 and 318,770.92 is: 477,076.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,323.96 : 775,730.40 = 318,770.92 : x
  2. Step 2: Convert to fraction form
    518,323.96/775,730.40 = 318,770.92/x
  3. Step 3: Cross multiply
    518,323.96x = 775,730.40 × 318,770.92
  4. Step 4: Simplify right side
    518,323.96x = 247,280,293,279.97
  5. Step 5: Solve for x
    x = 247,280,293,279.97/518,323.96
  6. Step 6: Final answer
    x = 477,076.72

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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.