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Finding the Fourth Proportional to 615,114.90, 922,672.35 and 426,158.10

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Solution

The fourth proportional to 615,114.90, 922,672.35 and 426,158.10 is: 639,237.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,114.90 : 922,672.35 = 426,158.10 : x
  2. Step 2: Convert to fraction form
    615,114.90/922,672.35 = 426,158.10/x
  3. Step 3: Cross multiply
    615,114.90x = 922,672.35 × 426,158.10
  4. Step 4: Simplify right side
    615,114.90x = 393,204,295,598.54
  5. Step 5: Solve for x
    x = 393,204,295,598.54/615,114.90
  6. Step 6: Final answer
    x = 639,237.15

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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.