Home / 858,680.80-1,288,025.64-503,445.70

Finding the Fourth Proportional to 858,680.80, 1,288,025.64 and 503,445.70

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Solution

The fourth proportional to 858,680.80, 1,288,025.64 and 503,445.70 is: 755,171.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,680.80 : 1,288,025.64 = 503,445.70 : x
  2. Step 2: Convert to fraction form
    858,680.80/1,288,025.64 = 503,445.70/x
  3. Step 3: Cross multiply
    858,680.80x = 1,288,025.64 × 503,445.70
  4. Step 4: Simplify right side
    858,680.80x = 648,450,969,947.75
  5. Step 5: Solve for x
    x = 648,450,969,947.75/858,680.80
  6. Step 6: Final answer
    x = 755,171.15

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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.