Home / 641,974.73-885,838.25-355,487.45

Finding the Fourth Proportional to 641,974.73, 885,838.25 and 355,487.45

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Solution

The fourth proportional to 641,974.73, 885,838.25 and 355,487.45 is: 490,524.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,974.73 : 885,838.25 = 355,487.45 : x
  2. Step 2: Convert to fraction form
    641,974.73/885,838.25 = 355,487.45/x
  3. Step 3: Cross multiply
    641,974.73x = 885,838.25 × 355,487.45
  4. Step 4: Simplify right side
    641,974.73x = 314,904,378,827.53
  5. Step 5: Solve for x
    x = 314,904,378,827.53/641,974.73
  6. Step 6: Final answer
    x = 490,524.57

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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.