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Finding the Fourth Proportional to 527,710.95, 791,567.08 and 128,348.95

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Solution

The fourth proportional to 527,710.95, 791,567.08 and 128,348.95 is: 192,523.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,710.95 : 791,567.08 = 128,348.95 : x
  2. Step 2: Convert to fraction form
    527,710.95/791,567.08 = 128,348.95/x
  3. Step 3: Cross multiply
    527,710.95x = 791,567.08 × 128,348.95
  4. Step 4: Simplify right side
    527,710.95x = 101,596,802,930.82
  5. Step 5: Solve for x
    x = 101,596,802,930.82/527,710.95
  6. Step 6: Final answer
    x = 192,523.58

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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.