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Finding the Fourth Proportional to 614,460.60, 921,690.90 and 331,025.40

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Solution

The fourth proportional to 614,460.60, 921,690.90 and 331,025.40 is: 496,538.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,460.60 : 921,690.90 = 331,025.40 : x
  2. Step 2: Convert to fraction form
    614,460.60/921,690.90 = 331,025.40/x
  3. Step 3: Cross multiply
    614,460.60x = 921,690.90 × 331,025.40
  4. Step 4: Simplify right side
    614,460.60x = 305,103,098,848.86
  5. Step 5: Solve for x
    x = 305,103,098,848.86/614,460.60
  6. Step 6: Final answer
    x = 496,538.10

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Similar ratio
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1.5x scale

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.