Home / 691,864.40-1,040,129.40-589,221.20

Finding the Fourth Proportional to 691,864.40, 1,040,129.40 and 589,221.20

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Solution

The fourth proportional to 691,864.40, 1,040,129.40 and 589,221.20 is: 885,818.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,864.40 : 1,040,129.40 = 589,221.20 : x
  2. Step 2: Convert to fraction form
    691,864.40/1,040,129.40 = 589,221.20/x
  3. Step 3: Cross multiply
    691,864.40x = 1,040,129.40 × 589,221.20
  4. Step 4: Simplify right side
    691,864.40x = 612,866,293,223.28
  5. Step 5: Solve for x
    x = 612,866,293,223.28/691,864.40
  6. Step 6: Final answer
    x = 885,818.51

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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.