Home / 821,314.20-1,229,897.70-655,426.20

Finding the Fourth Proportional to 821,314.20, 1,229,897.70 and 655,426.20

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Solution

The fourth proportional to 821,314.20, 1,229,897.70 and 655,426.20 is: 981,484.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,314.20 : 1,229,897.70 = 655,426.20 : x
  2. Step 2: Convert to fraction form
    821,314.20/1,229,897.70 = 655,426.20/x
  3. Step 3: Cross multiply
    821,314.20x = 1,229,897.70 × 655,426.20
  4. Step 4: Simplify right side
    821,314.20x = 806,107,175,899.74
  5. Step 5: Solve for x
    x = 806,107,175,899.74/821,314.20
  6. Step 6: Final answer
    x = 981,484.52

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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.