Home / 687,205.20-1,029,058.20-655,712.40

Finding the Fourth Proportional to 687,205.20, 1,029,058.20 and 655,712.40

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Solution

The fourth proportional to 687,205.20, 1,029,058.20 and 655,712.40 is: 981,899.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,205.20 : 1,029,058.20 = 655,712.40 : x
  2. Step 2: Convert to fraction form
    687,205.20/1,029,058.20 = 655,712.40/x
  3. Step 3: Cross multiply
    687,205.20x = 1,029,058.20 × 655,712.40
  4. Step 4: Simplify right side
    687,205.20x = 674,766,222,061.68
  5. Step 5: Solve for x
    x = 674,766,222,061.68/687,205.20
  6. Step 6: Final answer
    x = 981,899.18

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1.5x scale

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.