Home / 811,974.20-1,216,211.70-672,006.20

Finding the Fourth Proportional to 811,974.20, 1,216,211.70 and 672,006.20

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Solution

The fourth proportional to 811,974.20, 1,216,211.70 and 672,006.20 is: 1,006,561.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,974.20 : 1,216,211.70 = 672,006.20 : x
  2. Step 2: Convert to fraction form
    811,974.20/1,216,211.70 = 672,006.20/x
  3. Step 3: Cross multiply
    811,974.20x = 1,216,211.70 × 672,006.20
  4. Step 4: Simplify right side
    811,974.20x = 817,301,802,912.54
  5. Step 5: Solve for x
    x = 817,301,802,912.54/811,974.20
  6. Step 6: Final answer
    x = 1,006,561.30

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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.