Home / 642,335.57-963,518.94-215,877.59

Finding the Fourth Proportional to 642,335.57, 963,518.94 and 215,877.59

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Solution

The fourth proportional to 642,335.57, 963,518.94 and 215,877.59 is: 323,821.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,335.57 : 963,518.94 = 215,877.59 : x
  2. Step 2: Convert to fraction form
    642,335.57/963,518.94 = 215,877.59/x
  3. Step 3: Cross multiply
    642,335.57x = 963,518.94 × 215,877.59
  4. Step 4: Simplify right side
    642,335.57x = 208,002,141,868.96
  5. Step 5: Solve for x
    x = 208,002,141,868.96/642,335.57
  6. Step 6: Final answer
    x = 323,821.62

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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.