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Finding the Fourth Proportional to 710,251.88, 980,141.72 and 387,962.06

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Solution

The fourth proportional to 710,251.88, 980,141.72 and 387,962.06 is: 535,384.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,251.88 : 980,141.72 = 387,962.06 : x
  2. Step 2: Convert to fraction form
    710,251.88/980,141.72 = 387,962.06/x
  3. Step 3: Cross multiply
    710,251.88x = 980,141.72 × 387,962.06
  4. Step 4: Simplify right side
    710,251.88x = 380,257,793,942.62
  5. Step 5: Solve for x
    x = 380,257,793,942.62/710,251.88
  6. Step 6: Final answer
    x = 535,384.43

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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.