Home / 865,555.80-1,298,333.70-225,858.30

Finding the Fourth Proportional to 865,555.80, 1,298,333.70 and 225,858.30

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Solution

The fourth proportional to 865,555.80, 1,298,333.70 and 225,858.30 is: 338,787.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,555.80 : 1,298,333.70 = 225,858.30 : x
  2. Step 2: Convert to fraction form
    865,555.80/1,298,333.70 = 225,858.30/x
  3. Step 3: Cross multiply
    865,555.80x = 1,298,333.70 × 225,858.30
  4. Step 4: Simplify right side
    865,555.80x = 293,239,442,314.71
  5. Step 5: Solve for x
    x = 293,239,442,314.71/865,555.80
  6. Step 6: Final answer
    x = 338,787.45

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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.