Home / 840,391.19-1,260,597.72-279,425.69

Finding the Fourth Proportional to 840,391.19, 1,260,597.72 and 279,425.69

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Solution

The fourth proportional to 840,391.19, 1,260,597.72 and 279,425.69 is: 419,142.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,391.19 : 1,260,597.72 = 279,425.69 : x
  2. Step 2: Convert to fraction form
    840,391.19/1,260,597.72 = 279,425.69/x
  3. Step 3: Cross multiply
    840,391.19x = 1,260,597.72 × 279,425.69
  4. Step 4: Simplify right side
    840,391.19x = 352,243,387,723.43
  5. Step 5: Solve for x
    x = 352,243,387,723.43/840,391.19
  6. Step 6: Final answer
    x = 419,142.17

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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.