Home / 840,393.63-1,260,601.42-279,428.13

Finding the Fourth Proportional to 840,393.63, 1,260,601.42 and 279,428.13

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Solution

The fourth proportional to 840,393.63, 1,260,601.42 and 279,428.13 is: 419,145.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,393.63 : 1,260,601.42 = 279,428.13 : x
  2. Step 2: Convert to fraction form
    840,393.63/1,260,601.42 = 279,428.13/x
  3. Step 3: Cross multiply
    840,393.63x = 1,260,601.42 × 279,428.13
  4. Step 4: Simplify right side
    840,393.63x = 352,247,490,464.37
  5. Step 5: Solve for x
    x = 352,247,490,464.37/840,393.63
  6. Step 6: Final answer
    x = 419,145.84

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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.