Home / 878,755.27-1,317,658.64-398,721.12

Finding the Fourth Proportional to 878,755.27, 1,317,658.64 and 398,721.12

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Solution

The fourth proportional to 878,755.27, 1,317,658.64 and 398,721.12 is: 597,866.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,755.27 : 1,317,658.64 = 398,721.12 : x
  2. Step 2: Convert to fraction form
    878,755.27/1,317,658.64 = 398,721.12/x
  3. Step 3: Cross multiply
    878,755.27x = 1,317,658.64 × 398,721.12
  4. Step 4: Simplify right side
    878,755.27x = 525,378,328,718.48
  5. Step 5: Solve for x
    x = 525,378,328,718.48/878,755.27
  6. Step 6: Final answer
    x = 597,866.49

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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.