Home / 1,002,385.85-1,503,503.15-319,245.09

Finding the Fourth Proportional to 1,002,385.85, 1,503,503.15 and 319,245.09

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Solution

The fourth proportional to 1,002,385.85, 1,503,503.15 and 319,245.09 is: 478,843.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,002,385.85 : 1,503,503.15 = 319,245.09 : x
  2. Step 2: Convert to fraction form
    1,002,385.85/1,503,503.15 = 319,245.09/x
  3. Step 3: Cross multiply
    1,002,385.85x = 1,503,503.15 × 319,245.09
  4. Step 4: Simplify right side
    1,002,385.85x = 479,985,996,840.81
  5. Step 5: Solve for x
    x = 479,985,996,840.81/1,002,385.85
  6. Step 6: Final answer
    x = 478,843.55

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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.