Home / 858,862.80-1,288,294.20-480,949.20

Finding the Fourth Proportional to 858,862.80, 1,288,294.20 and 480,949.20

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Solution

The fourth proportional to 858,862.80, 1,288,294.20 and 480,949.20 is: 721,423.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,862.80 : 1,288,294.20 = 480,949.20 : x
  2. Step 2: Convert to fraction form
    858,862.80/1,288,294.20 = 480,949.20/x
  3. Step 3: Cross multiply
    858,862.80x = 1,288,294.20 × 480,949.20
  4. Step 4: Simplify right side
    858,862.80x = 619,604,064,854.64
  5. Step 5: Solve for x
    x = 619,604,064,854.64/858,862.80
  6. Step 6: Final answer
    x = 721,423.80

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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.