Home / 858,679.30-1,288,023.40-503,444.20

Finding the Fourth Proportional to 858,679.30, 1,288,023.40 and 503,444.20

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Solution

The fourth proportional to 858,679.30, 1,288,023.40 and 503,444.20 is: 755,168.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,679.30 : 1,288,023.40 = 503,444.20 : x
  2. Step 2: Convert to fraction form
    858,679.30/1,288,023.40 = 503,444.20/x
  3. Step 3: Cross multiply
    858,679.30x = 1,288,023.40 × 503,444.20
  4. Step 4: Simplify right side
    858,679.30x = 648,447,910,194.28
  5. Step 5: Solve for x
    x = 648,447,910,194.28/858,679.30
  6. Step 6: Final answer
    x = 755,168.91

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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.