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Finding the Fourth Proportional to 671,331.84, 1,007,439.48 and 316,446

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Solution

The fourth proportional to 671,331.84, 1,007,439.48 and 316,446 is: 474,877.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,331.84 : 1,007,439.48 = 316,446 : x
  2. Step 2: Convert to fraction form
    671,331.84/1,007,439.48 = 316,446/x
  3. Step 3: Cross multiply
    671,331.84x = 1,007,439.48 × 316,446
  4. Step 4: Simplify right side
    671,331.84x = 318,800,193,688.08
  5. Step 5: Solve for x
    x = 318,800,193,688.08/671,331.84
  6. Step 6: Final answer
    x = 474,877.21

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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.