Home / 638,121.49-956,602.89-318,371.15

Finding the Fourth Proportional to 638,121.49, 956,602.89 and 318,371.15

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Solution

The fourth proportional to 638,121.49, 956,602.89 and 318,371.15 is: 477,267.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,121.49 : 956,602.89 = 318,371.15 : x
  2. Step 2: Convert to fraction form
    638,121.49/956,602.89 = 318,371.15/x
  3. Step 3: Cross multiply
    638,121.49x = 956,602.89 × 318,371.15
  4. Step 4: Simplify right side
    638,121.49x = 304,554,764,574.13
  5. Step 5: Solve for x
    x = 304,554,764,574.13/638,121.49
  6. Step 6: Final answer
    x = 477,267.68

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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.