Home / 858,780.70-1,288,171.05-498,581.80

Finding the Fourth Proportional to 858,780.70, 1,288,171.05 and 498,581.80

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Solution

The fourth proportional to 858,780.70, 1,288,171.05 and 498,581.80 is: 747,872.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,780.70 : 1,288,171.05 = 498,581.80 : x
  2. Step 2: Convert to fraction form
    858,780.70/1,288,171.05 = 498,581.80/x
  3. Step 3: Cross multiply
    858,780.70x = 1,288,171.05 × 498,581.80
  4. Step 4: Simplify right side
    858,780.70x = 642,258,640,816.89
  5. Step 5: Solve for x
    x = 642,258,640,816.89/858,780.70
  6. Step 6: Final answer
    x = 747,872.70

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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.