Home / 638,392.22-880,987.40-351,922.56

Finding the Fourth Proportional to 638,392.22, 880,987.40 and 351,922.56

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Solution

The fourth proportional to 638,392.22, 880,987.40 and 351,922.56 is: 485,656.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,392.22 : 880,987.40 = 351,922.56 : x
  2. Step 2: Convert to fraction form
    638,392.22/880,987.40 = 351,922.56/x
  3. Step 3: Cross multiply
    638,392.22x = 880,987.40 × 351,922.56
  4. Step 4: Simplify right side
    638,392.22x = 310,039,341,135.74
  5. Step 5: Solve for x
    x = 310,039,341,135.74/638,392.22
  6. Step 6: Final answer
    x = 485,656.52

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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.