Home / 527,829.12-791,732.55-128,472.12

Finding the Fourth Proportional to 527,829.12, 791,732.55 and 128,472.12

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Solution

The fourth proportional to 527,829.12, 791,732.55 and 128,472.12 is: 192,705.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,829.12 : 791,732.55 = 128,472.12 : x
  2. Step 2: Convert to fraction form
    527,829.12/791,732.55 = 128,472.12/x
  3. Step 3: Cross multiply
    527,829.12x = 791,732.55 × 128,472.12
  4. Step 4: Simplify right side
    527,829.12x = 101,715,559,171.51
  5. Step 5: Solve for x
    x = 101,715,559,171.51/527,829.12
  6. Step 6: Final answer
    x = 192,705.47

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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.