Home / 527,405.71-727,823.37-285,688.28

Finding the Fourth Proportional to 527,405.71, 727,823.37 and 285,688.28

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Solution

The fourth proportional to 527,405.71, 727,823.37 and 285,688.28 is: 394,251.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,405.71 : 727,823.37 = 285,688.28 : x
  2. Step 2: Convert to fraction form
    527,405.71/727,823.37 = 285,688.28/x
  3. Step 3: Cross multiply
    527,405.71x = 727,823.37 × 285,688.28
  4. Step 4: Simplify right side
    527,405.71x = 207,930,606,719.10
  5. Step 5: Solve for x
    x = 207,930,606,719.10/527,405.71
  6. Step 6: Final answer
    x = 394,251.72

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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.