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Finding the Fourth Proportional to 410,612.20, 615,342.30 and 326,516.20

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Solution

The fourth proportional to 410,612.20, 615,342.30 and 326,516.20 is: 489,316.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,612.20 : 615,342.30 = 326,516.20 : x
  2. Step 2: Convert to fraction form
    410,612.20/615,342.30 = 326,516.20/x
  3. Step 3: Cross multiply
    410,612.20x = 615,342.30 × 326,516.20
  4. Step 4: Simplify right side
    410,612.20x = 200,919,229,495.26
  5. Step 5: Solve for x
    x = 200,919,229,495.26/410,612.20
  6. Step 6: Final answer
    x = 489,316.27

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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.