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Finding the Fourth Proportional to 527,988.79, 791,989.80 and 349,218.55

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Solution

The fourth proportional to 527,988.79, 791,989.80 and 349,218.55 is: 523,832.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,988.79 : 791,989.80 = 349,218.55 : x
  2. Step 2: Convert to fraction form
    527,988.79/791,989.80 = 349,218.55/x
  3. Step 3: Cross multiply
    527,988.79x = 791,989.80 × 349,218.55
  4. Step 4: Simplify right side
    527,988.79x = 276,577,531,215.56
  5. Step 5: Solve for x
    x = 276,577,531,215.56/527,988.79
  6. Step 6: Final answer
    x = 523,832.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.