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Finding the Fourth Proportional to 462,855.60, 694,283.40 and 445,140.90

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Solution

The fourth proportional to 462,855.60, 694,283.40 and 445,140.90 is: 667,711.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,855.60 : 694,283.40 = 445,140.90 : x
  2. Step 2: Convert to fraction form
    462,855.60/694,283.40 = 445,140.90/x
  3. Step 3: Cross multiply
    462,855.60x = 694,283.40 × 445,140.90
  4. Step 4: Simplify right side
    462,855.60x = 309,053,937,531.06
  5. Step 5: Solve for x
    x = 309,053,937,531.06/462,855.60
  6. Step 6: Final answer
    x = 667,711.35

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Double scale
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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.