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Finding the Fourth Proportional to 442,821.90, 663,248.70 and 442,821.90

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Solution

The fourth proportional to 442,821.90, 663,248.70 and 442,821.90 is: 663,248.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,821.90 : 663,248.70 = 442,821.90 : x
  2. Step 2: Convert to fraction form
    442,821.90/663,248.70 = 442,821.90/x
  3. Step 3: Cross multiply
    442,821.90x = 663,248.70 × 442,821.90
  4. Step 4: Simplify right side
    442,821.90x = 293,701,049,506.53
  5. Step 5: Solve for x
    x = 293,701,049,506.53/442,821.90
  6. Step 6: Final answer
    x = 663,248.70

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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.