Home / 643,895.31-888,578.96-402,317.97

Finding the Fourth Proportional to 643,895.31, 888,578.96 and 402,317.97

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Solution

The fourth proportional to 643,895.31, 888,578.96 and 402,317.97 is: 555,200.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,895.31 : 888,578.96 = 402,317.97 : x
  2. Step 2: Convert to fraction form
    643,895.31/888,578.96 = 402,317.97/x
  3. Step 3: Cross multiply
    643,895.31x = 888,578.96 × 402,317.97
  4. Step 4: Simplify right side
    643,895.31x = 357,491,281,360.32
  5. Step 5: Solve for x
    x = 357,491,281,360.32/643,895.31
  6. Step 6: Final answer
    x = 555,200.94

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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.