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Finding the Fourth Proportional to 494,411.40, 741,617.10 and 120,434.40

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Solution

The fourth proportional to 494,411.40, 741,617.10 and 120,434.40 is: 180,651.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,411.40 : 741,617.10 = 120,434.40 : x
  2. Step 2: Convert to fraction form
    494,411.40/741,617.10 = 120,434.40/x
  3. Step 3: Cross multiply
    494,411.40x = 741,617.10 × 120,434.40
  4. Step 4: Simplify right side
    494,411.40x = 89,316,210,468.24
  5. Step 5: Solve for x
    x = 89,316,210,468.24/494,411.40
  6. Step 6: Final answer
    x = 180,651.60

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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.