Home / 527,140.28-727,455-285,425.84

Finding the Fourth Proportional to 527,140.28, 727,455 and 285,425.84

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Solution

The fourth proportional to 527,140.28, 727,455 and 285,425.84 is: 393,888.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,140.28 : 727,455 = 285,425.84 : x
  2. Step 2: Convert to fraction form
    527,140.28/727,455 = 285,425.84/x
  3. Step 3: Cross multiply
    527,140.28x = 727,455 × 285,425.84
  4. Step 4: Simplify right side
    527,140.28x = 207,634,454,437.20
  5. Step 5: Solve for x
    x = 207,634,454,437.20/527,140.28
  6. Step 6: Final answer
    x = 393,888.42

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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.