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Finding the Fourth Proportional to 456,906.80, 631,398.84 and 343,532.72

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Solution

The fourth proportional to 456,906.80, 631,398.84 and 343,532.72 is: 474,727.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,906.80 : 631,398.84 = 343,532.72 : x
  2. Step 2: Convert to fraction form
    456,906.80/631,398.84 = 343,532.72/x
  3. Step 3: Cross multiply
    456,906.80x = 631,398.84 × 343,532.72
  4. Step 4: Simplify right side
    456,906.80x = 216,906,160,910.05
  5. Step 5: Solve for x
    x = 216,906,160,910.05/456,906.80
  6. Step 6: Final answer
    x = 474,727.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.