Home / 858,708.20-1,288,062.30-219,010.70

Finding the Fourth Proportional to 858,708.20, 1,288,062.30 and 219,010.70

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Solution

The fourth proportional to 858,708.20, 1,288,062.30 and 219,010.70 is: 328,516.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,708.20 : 1,288,062.30 = 219,010.70 : x
  2. Step 2: Convert to fraction form
    858,708.20/1,288,062.30 = 219,010.70/x
  3. Step 3: Cross multiply
    858,708.20x = 1,288,062.30 × 219,010.70
  4. Step 4: Simplify right side
    858,708.20x = 282,099,425,966.61
  5. Step 5: Solve for x
    x = 282,099,425,966.61/858,708.20
  6. Step 6: Final answer
    x = 328,516.05

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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.