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Finding the Fourth Proportional to 527,999.32, 728,642.30 and 286,279.76

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Solution

The fourth proportional to 527,999.32, 728,642.30 and 286,279.76 is: 395,067.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,999.32 : 728,642.30 = 286,279.76 : x
  2. Step 2: Convert to fraction form
    527,999.32/728,642.30 = 286,279.76/x
  3. Step 3: Cross multiply
    527,999.32x = 728,642.30 × 286,279.76
  4. Step 4: Simplify right side
    527,999.32x = 208,595,542,769.85
  5. Step 5: Solve for x
    x = 208,595,542,769.85/527,999.32
  6. Step 6: Final answer
    x = 395,067.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.