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Finding the Fourth Proportional to 527,954.90, 728,575.46 and 286,236.72

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Solution

The fourth proportional to 527,954.90, 728,575.46 and 286,236.72 is: 395,005.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,954.90 : 728,575.46 = 286,236.72 : x
  2. Step 2: Convert to fraction form
    527,954.90/728,575.46 = 286,236.72/x
  3. Step 3: Cross multiply
    527,954.90x = 728,575.46 × 286,236.72
  4. Step 4: Simplify right side
    527,954.90x = 208,545,049,585.10
  5. Step 5: Solve for x
    x = 208,545,049,585.10/527,954.90
  6. Step 6: Final answer
    x = 395,005.43

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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.