Home / 527,646.78-791,470.20-128,284.89

Finding the Fourth Proportional to 527,646.78, 791,470.20 and 128,284.89

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Solution

The fourth proportional to 527,646.78, 791,470.20 and 128,284.89 is: 192,427.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,646.78 : 791,470.20 = 128,284.89 : x
  2. Step 2: Convert to fraction form
    527,646.78/791,470.20 = 128,284.89/x
  3. Step 3: Cross multiply
    527,646.78x = 791,470.20 × 128,284.89
  4. Step 4: Simplify right side
    527,646.78x = 101,533,667,545.28
  5. Step 5: Solve for x
    x = 101,533,667,545.28/527,646.78
  6. Step 6: Final answer
    x = 192,427.34

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1.5x scale

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.