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Finding the Fourth Proportional to 716,531.04, 988,812.72 and 394,234.08

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Solution

The fourth proportional to 716,531.04, 988,812.72 and 394,234.08 is: 544,042.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,531.04 : 988,812.72 = 394,234.08 : x
  2. Step 2: Convert to fraction form
    716,531.04/988,812.72 = 394,234.08/x
  3. Step 3: Cross multiply
    716,531.04x = 988,812.72 × 394,234.08
  4. Step 4: Simplify right side
    716,531.04x = 389,823,672,961.50
  5. Step 5: Solve for x
    x = 389,823,672,961.50/716,531.04
  6. Step 6: Final answer
    x = 544,042.97

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1.5x scale

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.