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Finding the Fourth Proportional to 527,665.32, 791,490.42 and 128,305.08

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Solution

The fourth proportional to 527,665.32, 791,490.42 and 128,305.08 is: 192,455.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,665.32 : 791,490.42 = 128,305.08 : x
  2. Step 2: Convert to fraction form
    527,665.32/791,490.42 = 128,305.08/x
  3. Step 3: Cross multiply
    527,665.32x = 791,490.42 × 128,305.08
  4. Step 4: Simplify right side
    527,665.32x = 101,552,241,657.33
  5. Step 5: Solve for x
    x = 101,552,241,657.33/527,665.32
  6. Step 6: Final answer
    x = 192,455.78

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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.