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Finding the Fourth Proportional to 494,712.40, 742,360.20 and 326,718.40

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Solution

The fourth proportional to 494,712.40, 742,360.20 and 326,718.40 is: 490,270.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,712.40 : 742,360.20 = 326,718.40 : x
  2. Step 2: Convert to fraction form
    494,712.40/742,360.20 = 326,718.40/x
  3. Step 3: Cross multiply
    494,712.40x = 742,360.20 × 326,718.40
  4. Step 4: Simplify right side
    494,712.40x = 242,542,736,767.68
  5. Step 5: Solve for x
    x = 242,542,736,767.68/494,712.40
  6. Step 6: Final answer
    x = 490,270.18

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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.