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Finding the Fourth Proportional to 677,680.64, 935,211.76 and 371,772.64

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Solution

The fourth proportional to 677,680.64, 935,211.76 and 371,772.64 is: 513,053.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,680.64 : 935,211.76 = 371,772.64 : x
  2. Step 2: Convert to fraction form
    677,680.64/935,211.76 = 371,772.64/x
  3. Step 3: Cross multiply
    677,680.64x = 935,211.76 × 371,772.64
  4. Step 4: Simplify right side
    677,680.64x = 347,686,144,974.25
  5. Step 5: Solve for x
    x = 347,686,144,974.25/677,680.64
  6. Step 6: Final answer
    x = 513,053.09

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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.