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Finding the Fourth Proportional to 554,906.10, 832,359.15 and 455,178.90

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Solution

The fourth proportional to 554,906.10, 832,359.15 and 455,178.90 is: 682,768.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,906.10 : 832,359.15 = 455,178.90 : x
  2. Step 2: Convert to fraction form
    554,906.10/832,359.15 = 455,178.90/x
  3. Step 3: Cross multiply
    554,906.10x = 832,359.15 × 455,178.90
  4. Step 4: Simplify right side
    554,906.10x = 378,872,322,301.94
  5. Step 5: Solve for x
    x = 378,872,322,301.94/554,906.10
  6. Step 6: Final answer
    x = 682,768.35

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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.