Home / 876,401.40-1,311,143.23-663,781.95

Finding the Fourth Proportional to 876,401.40, 1,311,143.23 and 663,781.95

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Solution

The fourth proportional to 876,401.40, 1,311,143.23 and 663,781.95 is: 993,053.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,401.40 : 1,311,143.23 = 663,781.95 : x
  2. Step 2: Convert to fraction form
    876,401.40/1,311,143.23 = 663,781.95/x
  3. Step 3: Cross multiply
    876,401.40x = 1,311,143.23 × 663,781.95
  4. Step 4: Simplify right side
    876,401.40x = 870,313,210,768.43
  5. Step 5: Solve for x
    x = 870,313,210,768.43/876,401.40
  6. Step 6: Final answer
    x = 993,053.19

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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.