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Finding the Fourth Proportional to 807,689.85, 1,114,616.37 and 463,498.38

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Solution

The fourth proportional to 807,689.85, 1,114,616.37 and 463,498.38 is: 639,630.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,689.85 : 1,114,616.37 = 463,498.38 : x
  2. Step 2: Convert to fraction form
    807,689.85/1,114,616.37 = 463,498.38/x
  3. Step 3: Cross multiply
    807,689.85x = 1,114,616.37 × 463,498.38
  4. Step 4: Simplify right side
    807,689.85x = 516,622,881,816.48
  5. Step 5: Solve for x
    x = 516,622,881,816.48/807,689.85
  6. Step 6: Final answer
    x = 639,630.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.