Home / 858,885.60-1,288,328.40-503,716.80

Finding the Fourth Proportional to 858,885.60, 1,288,328.40 and 503,716.80

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Solution

The fourth proportional to 858,885.60, 1,288,328.40 and 503,716.80 is: 755,575.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,885.60 : 1,288,328.40 = 503,716.80 : x
  2. Step 2: Convert to fraction form
    858,885.60/1,288,328.40 = 503,716.80/x
  3. Step 3: Cross multiply
    858,885.60x = 1,288,328.40 × 503,716.80
  4. Step 4: Simplify right side
    858,885.60x = 648,952,658,997.12
  5. Step 5: Solve for x
    x = 648,952,658,997.12/858,885.60
  6. Step 6: Final answer
    x = 755,575.20

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Double scale
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Similar ratio
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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.