Home / 781,723.78-1,078,768.53-442,192.03

Finding the Fourth Proportional to 781,723.78, 1,078,768.53 and 442,192.03

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Solution

The fourth proportional to 781,723.78, 1,078,768.53 and 442,192.03 is: 610,219.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,723.78 : 1,078,768.53 = 442,192.03 : x
  2. Step 2: Convert to fraction form
    781,723.78/1,078,768.53 = 442,192.03/x
  3. Step 3: Cross multiply
    781,723.78x = 1,078,768.53 × 442,192.03
  4. Step 4: Simplify right side
    781,723.78x = 477,022,846,180.82
  5. Step 5: Solve for x
    x = 477,022,846,180.82/781,723.78
  6. Step 6: Final answer
    x = 610,219.18

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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.