Home / 858,765.70-1,288,148.55-699,333.40

Finding the Fourth Proportional to 858,765.70, 1,288,148.55 and 699,333.40

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Solution

The fourth proportional to 858,765.70, 1,288,148.55 and 699,333.40 is: 1,049,000.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,765.70 : 1,288,148.55 = 699,333.40 : x
  2. Step 2: Convert to fraction form
    858,765.70/1,288,148.55 = 699,333.40/x
  3. Step 3: Cross multiply
    858,765.70x = 1,288,148.55 × 699,333.40
  4. Step 4: Simplify right side
    858,765.70x = 900,845,305,176.57
  5. Step 5: Solve for x
    x = 900,845,305,176.57/858,765.70
  6. Step 6: Final answer
    x = 1,049,000.10

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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.