Home / 858,850.80-1,288,276.20-480,937.20

Finding the Fourth Proportional to 858,850.80, 1,288,276.20 and 480,937.20

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Solution

The fourth proportional to 858,850.80, 1,288,276.20 and 480,937.20 is: 721,405.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,850.80 : 1,288,276.20 = 480,937.20 : x
  2. Step 2: Convert to fraction form
    858,850.80/1,288,276.20 = 480,937.20/x
  3. Step 3: Cross multiply
    858,850.80x = 1,288,276.20 × 480,937.20
  4. Step 4: Simplify right side
    858,850.80x = 619,579,948,454.64
  5. Step 5: Solve for x
    x = 619,579,948,454.64/858,850.80
  6. Step 6: Final answer
    x = 721,405.80

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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.