Home / 807,863.60-1,211,795.40-239,265.20

Finding the Fourth Proportional to 807,863.60, 1,211,795.40 and 239,265.20

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Solution

The fourth proportional to 807,863.60, 1,211,795.40 and 239,265.20 is: 358,897.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,863.60 : 1,211,795.40 = 239,265.20 : x
  2. Step 2: Convert to fraction form
    807,863.60/1,211,795.40 = 239,265.20/x
  3. Step 3: Cross multiply
    807,863.60x = 1,211,795.40 × 239,265.20
  4. Step 4: Simplify right side
    807,863.60x = 289,940,468,740.08
  5. Step 5: Solve for x
    x = 289,940,468,740.08/807,863.60
  6. Step 6: Final answer
    x = 358,897.80

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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.