Home / 513,428.28-769,390.56-289,225.68

Finding the Fourth Proportional to 513,428.28, 769,390.56 and 289,225.68

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Solution

The fourth proportional to 513,428.28, 769,390.56 and 289,225.68 is: 433,414.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,428.28 : 769,390.56 = 289,225.68 : x
  2. Step 2: Convert to fraction form
    513,428.28/769,390.56 = 289,225.68/x
  3. Step 3: Cross multiply
    513,428.28x = 769,390.56 × 289,225.68
  4. Step 4: Simplify right side
    513,428.28x = 222,527,507,901.58
  5. Step 5: Solve for x
    x = 222,527,507,901.58/513,428.28
  6. Step 6: Final answer
    x = 433,414.98

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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.