Home / 410,827.20-615,664.80-326,731.20

Finding the Fourth Proportional to 410,827.20, 615,664.80 and 326,731.20

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Solution

The fourth proportional to 410,827.20, 615,664.80 and 326,731.20 is: 489,638.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,827.20 : 615,664.80 = 326,731.20 : x
  2. Step 2: Convert to fraction form
    410,827.20/615,664.80 = 326,731.20/x
  3. Step 3: Cross multiply
    410,827.20x = 615,664.80 × 326,731.20
  4. Step 4: Simplify right side
    410,827.20x = 201,156,898,901.76
  5. Step 5: Solve for x
    x = 201,156,898,901.76/410,827.20
  6. Step 6: Final answer
    x = 489,638.71

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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.