Home / 670,608.10-1,005,912.15-221,398.30

Finding the Fourth Proportional to 670,608.10, 1,005,912.15 and 221,398.30

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Solution

The fourth proportional to 670,608.10, 1,005,912.15 and 221,398.30 is: 332,097.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,608.10 : 1,005,912.15 = 221,398.30 : x
  2. Step 2: Convert to fraction form
    670,608.10/1,005,912.15 = 221,398.30/x
  3. Step 3: Cross multiply
    670,608.10x = 1,005,912.15 × 221,398.30
  4. Step 4: Simplify right side
    670,608.10x = 222,707,239,959.35
  5. Step 5: Solve for x
    x = 222,707,239,959.35/670,608.10
  6. Step 6: Final answer
    x = 332,097.45

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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.