Home / 858,921.40-1,288,382.10-504,335.80

Finding the Fourth Proportional to 858,921.40, 1,288,382.10 and 504,335.80

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Solution

The fourth proportional to 858,921.40, 1,288,382.10 and 504,335.80 is: 756,503.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,921.40 : 1,288,382.10 = 504,335.80 : x
  2. Step 2: Convert to fraction form
    858,921.40/1,288,382.10 = 504,335.80/x
  3. Step 3: Cross multiply
    858,921.40x = 1,288,382.10 × 504,335.80
  4. Step 4: Simplify right side
    858,921.40x = 649,777,217,109.18
  5. Step 5: Solve for x
    x = 649,777,217,109.18/858,921.40
  6. Step 6: Final answer
    x = 756,503.70

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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.