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Finding the Fourth Proportional to 988,248, 1,482,240.96 and 278,331.84

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Solution

The fourth proportional to 988,248, 1,482,240.96 and 278,331.84 is: 417,460.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,248 : 1,482,240.96 = 278,331.84 : x
  2. Step 2: Convert to fraction form
    988,248/1,482,240.96 = 278,331.84/x
  3. Step 3: Cross multiply
    988,248x = 1,482,240.96 × 278,331.84
  4. Step 4: Simplify right side
    988,248x = 412,554,853,720.17
  5. Step 5: Solve for x
    x = 412,554,853,720.17/988,248
  6. Step 6: Final answer
    x = 417,460.85

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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.