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Finding the Fourth Proportional to 494,641.56, 742,079.30 and 393,820.84

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Solution

The fourth proportional to 494,641.56, 742,079.30 and 393,820.84 is: 590,824.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,641.56 : 742,079.30 = 393,820.84 : x
  2. Step 2: Convert to fraction form
    494,641.56/742,079.30 = 393,820.84/x
  3. Step 3: Cross multiply
    494,641.56x = 742,079.30 × 393,820.84
  4. Step 4: Simplify right side
    494,641.56x = 292,246,293,272.61
  5. Step 5: Solve for x
    x = 292,246,293,272.61/494,641.56
  6. Step 6: Final answer
    x = 590,824.38

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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.