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Finding the Fourth Proportional to 691,565.64, 954,377.50 and 385,639.08

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Solution

The fourth proportional to 691,565.64, 954,377.50 and 385,639.08 is: 532,191.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,565.64 : 954,377.50 = 385,639.08 : x
  2. Step 2: Convert to fraction form
    691,565.64/954,377.50 = 385,639.08/x
  3. Step 3: Cross multiply
    691,565.64x = 954,377.50 × 385,639.08
  4. Step 4: Simplify right side
    691,565.64x = 368,045,261,072.70
  5. Step 5: Solve for x
    x = 368,045,261,072.70/691,565.64
  6. Step 6: Final answer
    x = 532,191.36

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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.