Home / 878,469.12-1,212,287.28-476,061.12

Finding the Fourth Proportional to 878,469.12, 1,212,287.28 and 476,061.12

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Solution

The fourth proportional to 878,469.12, 1,212,287.28 and 476,061.12 is: 656,964.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,469.12 : 1,212,287.28 = 476,061.12 : x
  2. Step 2: Convert to fraction form
    878,469.12/1,212,287.28 = 476,061.12/x
  3. Step 3: Cross multiply
    878,469.12x = 1,212,287.28 × 476,061.12
  4. Step 4: Simplify right side
    878,469.12x = 577,122,840,278.55
  5. Step 5: Solve for x
    x = 577,122,840,278.55/878,469.12
  6. Step 6: Final answer
    x = 656,964.29

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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.