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Finding the Fourth Proportional to 461,478.12, 636,719.46 and 270,388.84

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Solution

The fourth proportional to 461,478.12, 636,719.46 and 270,388.84 is: 373,066.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,478.12 : 636,719.46 = 270,388.84 : x
  2. Step 2: Convert to fraction form
    461,478.12/636,719.46 = 270,388.84/x
  3. Step 3: Cross multiply
    461,478.12x = 636,719.46 × 270,388.84
  4. Step 4: Simplify right side
    461,478.12x = 172,161,836,194.83
  5. Step 5: Solve for x
    x = 172,161,836,194.83/461,478.12
  6. Step 6: Final answer
    x = 373,066.09

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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.