Home / 641,942.82-885,870.24-355,456.74

Finding the Fourth Proportional to 641,942.82, 885,870.24 and 355,456.74

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Solution

The fourth proportional to 641,942.82, 885,870.24 and 355,456.74 is: 490,524.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,942.82 : 885,870.24 = 355,456.74 : x
  2. Step 2: Convert to fraction form
    641,942.82/885,870.24 = 355,456.74/x
  3. Step 3: Cross multiply
    641,942.82x = 885,870.24 × 355,456.74
  4. Step 4: Simplify right side
    641,942.82x = 314,888,547,573.42
  5. Step 5: Solve for x
    x = 314,888,547,573.42/641,942.82
  6. Step 6: Final answer
    x = 490,524.29

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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.