Home / 820,169.40-1,230,254.10-687,309.15

Finding the Fourth Proportional to 820,169.40, 1,230,254.10 and 687,309.15

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Solution

The fourth proportional to 820,169.40, 1,230,254.10 and 687,309.15 is: 1,030,963.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,169.40 : 1,230,254.10 = 687,309.15 : x
  2. Step 2: Convert to fraction form
    820,169.40/1,230,254.10 = 687,309.15/x
  3. Step 3: Cross multiply
    820,169.40x = 1,230,254.10 × 687,309.15
  4. Step 4: Simplify right side
    820,169.40x = 845,564,899,755.02
  5. Step 5: Solve for x
    x = 845,564,899,755.02/820,169.40
  6. Step 6: Final answer
    x = 1,030,963.73

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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.