Home / 811,969.20-1,216,204.20-672,001.20

Finding the Fourth Proportional to 811,969.20, 1,216,204.20 and 672,001.20

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Solution

The fourth proportional to 811,969.20, 1,216,204.20 and 672,001.20 is: 1,006,553.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,969.20 : 1,216,204.20 = 672,001.20 : x
  2. Step 2: Convert to fraction form
    811,969.20/1,216,204.20 = 672,001.20/x
  3. Step 3: Cross multiply
    811,969.20x = 1,216,204.20 × 672,001.20
  4. Step 4: Simplify right side
    811,969.20x = 817,290,681,845.04
  5. Step 5: Solve for x
    x = 817,290,681,845.04/811,969.20
  6. Step 6: Final answer
    x = 1,006,553.80

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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.