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Finding the Fourth Proportional to 654,312.13, 981,468.19 and 180,985.19

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Solution

The fourth proportional to 654,312.13, 981,468.19 and 180,985.19 is: 271,477.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,312.13 : 981,468.19 = 180,985.19 : x
  2. Step 2: Convert to fraction form
    654,312.13/981,468.19 = 180,985.19/x
  3. Step 3: Cross multiply
    654,312.13x = 981,468.19 × 180,985.19
  4. Step 4: Simplify right side
    654,312.13x = 177,631,202,165.00
  5. Step 5: Solve for x
    x = 177,631,202,165.00/654,312.13
  6. Step 6: Final answer
    x = 271,477.78

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Half scale
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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.