Home / 807,387.60-1,211,081.40-246,421.20

Finding the Fourth Proportional to 807,387.60, 1,211,081.40 and 246,421.20

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Solution

The fourth proportional to 807,387.60, 1,211,081.40 and 246,421.20 is: 369,631.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,387.60 : 1,211,081.40 = 246,421.20 : x
  2. Step 2: Convert to fraction form
    807,387.60/1,211,081.40 = 246,421.20/x
  3. Step 3: Cross multiply
    807,387.60x = 1,211,081.40 × 246,421.20
  4. Step 4: Simplify right side
    807,387.60x = 298,436,131,885.68
  5. Step 5: Solve for x
    x = 298,436,131,885.68/807,387.60
  6. Step 6: Final answer
    x = 369,631.80

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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.