Home / 876,400.85-1,311,142.39-663,781.39

Finding the Fourth Proportional to 876,400.85, 1,311,142.39 and 663,781.39

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Solution

The fourth proportional to 876,400.85, 1,311,142.39 and 663,781.39 is: 993,052.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,400.85 : 1,311,142.39 = 663,781.39 : x
  2. Step 2: Convert to fraction form
    876,400.85/1,311,142.39 = 663,781.39/x
  3. Step 3: Cross multiply
    876,400.85x = 1,311,142.39 × 663,781.39
  4. Step 4: Simplify right side
    876,400.85x = 870,311,913,184.81
  5. Step 5: Solve for x
    x = 870,311,913,184.81/876,400.85
  6. Step 6: Final answer
    x = 993,052.34

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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.