Home / 527,817.90-791,720.16-128,459.55

Finding the Fourth Proportional to 527,817.90, 791,720.16 and 128,459.55

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Solution

The fourth proportional to 527,817.90, 791,720.16 and 128,459.55 is: 192,687.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,817.90 : 791,720.16 = 128,459.55 : x
  2. Step 2: Convert to fraction form
    527,817.90/791,720.16 = 128,459.55/x
  3. Step 3: Cross multiply
    527,817.90x = 791,720.16 × 128,459.55
  4. Step 4: Simplify right side
    527,817.90x = 101,704,015,479.53
  5. Step 5: Solve for x
    x = 101,704,015,479.53/527,817.90
  6. Step 6: Final answer
    x = 192,687.70

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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.