Home / 858,498.60-1,288,331.10-479,418.60

Finding the Fourth Proportional to 858,498.60, 1,288,331.10 and 479,418.60

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Solution

The fourth proportional to 858,498.60, 1,288,331.10 and 479,418.60 is: 719,453.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,498.60 : 1,288,331.10 = 479,418.60 : x
  2. Step 2: Convert to fraction form
    858,498.60/1,288,331.10 = 479,418.60/x
  3. Step 3: Cross multiply
    858,498.60x = 1,288,331.10 × 479,418.60
  4. Step 4: Simplify right side
    858,498.60x = 617,649,892,298.46
  5. Step 5: Solve for x
    x = 617,649,892,298.46/858,498.60
  6. Step 6: Final answer
    x = 719,453.58

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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.