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Finding the Fourth Proportional to 444,456.90, 666,685.35 and 326,358.90

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Solution

The fourth proportional to 444,456.90, 666,685.35 and 326,358.90 is: 489,538.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,456.90 : 666,685.35 = 326,358.90 : x
  2. Step 2: Convert to fraction form
    444,456.90/666,685.35 = 326,358.90/x
  3. Step 3: Cross multiply
    444,456.90x = 666,685.35 × 326,358.90
  4. Step 4: Simplify right side
    444,456.90x = 217,578,697,472.12
  5. Step 5: Solve for x
    x = 217,578,697,472.12/444,456.90
  6. Step 6: Final answer
    x = 489,538.35

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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.