Home / 386,640.30-579,960.45-268,542.30

Finding the Fourth Proportional to 386,640.30, 579,960.45 and 268,542.30

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Solution

The fourth proportional to 386,640.30, 579,960.45 and 268,542.30 is: 402,813.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,640.30 : 579,960.45 = 268,542.30 : x
  2. Step 2: Convert to fraction form
    386,640.30/579,960.45 = 268,542.30/x
  3. Step 3: Cross multiply
    386,640.30x = 579,960.45 × 268,542.30
  4. Step 4: Simplify right side
    386,640.30x = 155,743,913,152.04
  5. Step 5: Solve for x
    x = 155,743,913,152.04/386,640.30
  6. Step 6: Final answer
    x = 402,813.45

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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.