Home / 642,273.78-963,432.52-305,140.44

Finding the Fourth Proportional to 642,273.78, 963,432.52 and 305,140.44

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Solution

The fourth proportional to 642,273.78, 963,432.52 and 305,140.44 is: 457,721.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,273.78 : 963,432.52 = 305,140.44 : x
  2. Step 2: Convert to fraction form
    642,273.78/963,432.52 = 305,140.44/x
  3. Step 3: Cross multiply
    642,273.78x = 963,432.52 × 305,140.44
  4. Step 4: Simplify right side
    642,273.78x = 293,982,223,063.11
  5. Step 5: Solve for x
    x = 293,982,223,063.11/642,273.78
  6. Step 6: Final answer
    x = 457,721.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.