Home / 638,454.33-881,073.78-351,984.69

Finding the Fourth Proportional to 638,454.33, 881,073.78 and 351,984.69

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Solution

The fourth proportional to 638,454.33, 881,073.78 and 351,984.69 is: 485,742.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,454.33 : 881,073.78 = 351,984.69 : x
  2. Step 2: Convert to fraction form
    638,454.33/881,073.78 = 351,984.69/x
  3. Step 3: Cross multiply
    638,454.33x = 881,073.78 × 351,984.69
  4. Step 4: Simplify right side
    638,454.33x = 310,124,481,320.43
  5. Step 5: Solve for x
    x = 310,124,481,320.43/638,454.33
  6. Step 6: Final answer
    x = 485,742.62

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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.