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Finding the Fourth Proportional to 673,489.32, 929,436.96 and 383,093.40

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Solution

The fourth proportional to 673,489.32, 929,436.96 and 383,093.40 is: 528,681.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,489.32 : 929,436.96 = 383,093.40 : x
  2. Step 2: Convert to fraction form
    673,489.32/929,436.96 = 383,093.40/x
  3. Step 3: Cross multiply
    673,489.32x = 929,436.96 × 383,093.40
  4. Step 4: Simplify right side
    673,489.32x = 356,061,165,092.06
  5. Step 5: Solve for x
    x = 356,061,165,092.06/673,489.32
  6. Step 6: Final answer
    x = 528,681.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.