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Finding the Fourth Proportional to 415,934.60, 623,901.90 and 317,630.60

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Solution

The fourth proportional to 415,934.60, 623,901.90 and 317,630.60 is: 476,445.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,934.60 : 623,901.90 = 317,630.60 : x
  2. Step 2: Convert to fraction form
    415,934.60/623,901.90 = 317,630.60/x
  3. Step 3: Cross multiply
    415,934.60x = 623,901.90 × 317,630.60
  4. Step 4: Simplify right side
    415,934.60x = 198,170,334,838.14
  5. Step 5: Solve for x
    x = 198,170,334,838.14/415,934.60
  6. Step 6: Final answer
    x = 476,445.90

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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.