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Finding the Fourth Proportional to 442,035.41, 663,516.84 and 391,756.08

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Solution

The fourth proportional to 442,035.41, 663,516.84 and 391,756.08 is: 588,045.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,035.41 : 663,516.84 = 391,756.08 : x
  2. Step 2: Convert to fraction form
    442,035.41/663,516.84 = 391,756.08/x
  3. Step 3: Cross multiply
    442,035.41x = 663,516.84 × 391,756.08
  4. Step 4: Simplify right side
    442,035.41x = 259,936,756,252.39
  5. Step 5: Solve for x
    x = 259,936,756,252.39/442,035.41
  6. Step 6: Final answer
    x = 588,045.10

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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.