Home / 527,136.28-727,449.48-285,421.84

Finding the Fourth Proportional to 527,136.28, 727,449.48 and 285,421.84

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Solution

The fourth proportional to 527,136.28, 727,449.48 and 285,421.84 is: 393,882.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,136.28 : 727,449.48 = 285,421.84 : x
  2. Step 2: Convert to fraction form
    527,136.28/727,449.48 = 285,421.84/x
  3. Step 3: Cross multiply
    527,136.28x = 727,449.48 × 285,421.84
  4. Step 4: Simplify right side
    527,136.28x = 207,629,969,088.64
  5. Step 5: Solve for x
    x = 207,629,969,088.64/527,136.28
  6. Step 6: Final answer
    x = 393,882.90

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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.