Home / 509,842.40-764,865.76-285,521.92

Finding the Fourth Proportional to 509,842.40, 764,865.76 and 285,521.92

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Solution

The fourth proportional to 509,842.40, 764,865.76 and 285,521.92 is: 428,340.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,842.40 : 764,865.76 = 285,521.92 : x
  2. Step 2: Convert to fraction form
    509,842.40/764,865.76 = 285,521.92/x
  3. Step 3: Cross multiply
    509,842.40x = 764,865.76 × 285,521.92
  4. Step 4: Simplify right side
    509,842.40x = 218,385,940,337.46
  5. Step 5: Solve for x
    x = 218,385,940,337.46/509,842.40
  6. Step 6: Final answer
    x = 428,340.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.