Home / 858,514.60-1,288,355.10-479,434.60

Finding the Fourth Proportional to 858,514.60, 1,288,355.10 and 479,434.60

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Solution

The fourth proportional to 858,514.60, 1,288,355.10 and 479,434.60 is: 719,477.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,514.60 : 1,288,355.10 = 479,434.60 : x
  2. Step 2: Convert to fraction form
    858,514.60/1,288,355.10 = 479,434.60/x
  3. Step 3: Cross multiply
    858,514.60x = 1,288,355.10 × 479,434.60
  4. Step 4: Simplify right side
    858,514.60x = 617,682,012,026.46
  5. Step 5: Solve for x
    x = 617,682,012,026.46/858,514.60
  6. Step 6: Final answer
    x = 719,477.59

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Double scale
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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.