Home / 527,531.72-727,950.70-309,717.44

Finding the Fourth Proportional to 527,531.72, 727,950.70 and 309,717.44

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Solution

The fourth proportional to 527,531.72, 727,950.70 and 309,717.44 is: 427,384.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,531.72 : 727,950.70 = 309,717.44 : x
  2. Step 2: Convert to fraction form
    527,531.72/727,950.70 = 309,717.44/x
  3. Step 3: Cross multiply
    527,531.72x = 727,950.70 × 309,717.44
  4. Step 4: Simplify right side
    527,531.72x = 225,459,027,250.21
  5. Step 5: Solve for x
    x = 225,459,027,250.21/527,531.72
  6. Step 6: Final answer
    x = 427,384.78

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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.