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Finding the Fourth Proportional to 442,398.85, 660,368.59 and 379,622.38

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Solution

The fourth proportional to 442,398.85, 660,368.59 and 379,622.38 is: 566,662.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,398.85 : 660,368.59 = 379,622.38 : x
  2. Step 2: Convert to fraction form
    442,398.85/660,368.59 = 379,622.38/x
  3. Step 3: Cross multiply
    442,398.85x = 660,368.59 × 379,622.38
  4. Step 4: Simplify right side
    442,398.85x = 250,690,697,205.73
  5. Step 5: Solve for x
    x = 250,690,697,205.73/442,398.85
  6. Step 6: Final answer
    x = 566,662.18

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.