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Finding the Fourth Proportional to 691,632, 954,452.16 and 373,680

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Solution

The fourth proportional to 691,632, 954,452.16 and 373,680 is: 515,678.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,632 : 954,452.16 = 373,680 : x
  2. Step 2: Convert to fraction form
    691,632/954,452.16 = 373,680/x
  3. Step 3: Cross multiply
    691,632x = 954,452.16 × 373,680
  4. Step 4: Simplify right side
    691,632x = 356,659,683,148.80
  5. Step 5: Solve for x
    x = 356,659,683,148.80/691,632
  6. Step 6: Final answer
    x = 515,678.40

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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.