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Finding the Fourth Proportional to 527,028.60, 727,293.42 and 285,305.85

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Solution

The fourth proportional to 527,028.60, 727,293.42 and 285,305.85 is: 393,718.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,028.60 : 727,293.42 = 285,305.85 : x
  2. Step 2: Convert to fraction form
    527,028.60/727,293.42 = 285,305.85/x
  3. Step 3: Cross multiply
    527,028.60x = 727,293.42 × 285,305.85
  4. Step 4: Simplify right side
    527,028.60x = 207,501,067,392.51
  5. Step 5: Solve for x
    x = 207,501,067,392.51/527,028.60
  6. Step 6: Final answer
    x = 393,718.80

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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.