Home / 714,238.94-985,665.90-391,969.44

Finding the Fourth Proportional to 714,238.94, 985,665.90 and 391,969.44

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Solution

The fourth proportional to 714,238.94, 985,665.90 and 391,969.44 is: 540,926.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,238.94 : 985,665.90 = 391,969.44 : x
  2. Step 2: Convert to fraction form
    714,238.94/985,665.90 = 391,969.44/x
  3. Step 3: Cross multiply
    714,238.94x = 985,665.90 × 391,969.44
  4. Step 4: Simplify right side
    714,238.94x = 386,350,910,850.10
  5. Step 5: Solve for x
    x = 386,350,910,850.10/714,238.94
  6. Step 6: Final answer
    x = 540,926.70

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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.