Home / 638,130.28-880,625.70-351,660.64

Finding the Fourth Proportional to 638,130.28, 880,625.70 and 351,660.64

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Solution

The fourth proportional to 638,130.28, 880,625.70 and 351,660.64 is: 485,294.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,130.28 : 880,625.70 = 351,660.64 : x
  2. Step 2: Convert to fraction form
    638,130.28/880,625.70 = 351,660.64/x
  3. Step 3: Cross multiply
    638,130.28x = 880,625.70 × 351,660.64
  4. Step 4: Simplify right side
    638,130.28x = 309,681,397,262.45
  5. Step 5: Solve for x
    x = 309,681,397,262.45/638,130.28
  6. Step 6: Final answer
    x = 485,294.94

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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.