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Finding the Fourth Proportional to 476,934.40, 668,691.20 and 476,934.40

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Solution

The fourth proportional to 476,934.40, 668,691.20 and 476,934.40 is: 668,691.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,934.40 : 668,691.20 = 476,934.40 : x
  2. Step 2: Convert to fraction form
    476,934.40/668,691.20 = 476,934.40/x
  3. Step 3: Cross multiply
    476,934.40x = 668,691.20 × 476,934.40
  4. Step 4: Simplify right side
    476,934.40x = 318,921,836,257.28
  5. Step 5: Solve for x
    x = 318,921,836,257.28/476,934.40
  6. Step 6: Final answer
    x = 668,691.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.