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Finding the Fourth Proportional to 615,452.20, 922,487.10 and 260,405.80

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Solution

The fourth proportional to 615,452.20, 922,487.10 and 260,405.80 is: 390,316.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,452.20 : 922,487.10 = 260,405.80 : x
  2. Step 2: Convert to fraction form
    615,452.20/922,487.10 = 260,405.80/x
  3. Step 3: Cross multiply
    615,452.20x = 922,487.10 × 260,405.80
  4. Step 4: Simplify right side
    615,452.20x = 240,220,991,265.18
  5. Step 5: Solve for x
    x = 240,220,991,265.18/615,452.20
  6. Step 6: Final answer
    x = 390,316.24

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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.