Home / 642,387.68-963,669.96-215,956.56

Finding the Fourth Proportional to 642,387.68, 963,669.96 and 215,956.56

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Solution

The fourth proportional to 642,387.68, 963,669.96 and 215,956.56 is: 323,964.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,387.68 : 963,669.96 = 215,956.56 : x
  2. Step 2: Convert to fraction form
    642,387.68/963,669.96 = 215,956.56/x
  3. Step 3: Cross multiply
    642,387.68x = 963,669.96 × 215,956.56
  4. Step 4: Simplify right side
    642,387.68x = 208,110,849,536.94
  5. Step 5: Solve for x
    x = 208,110,849,536.94/642,387.68
  6. Step 6: Final answer
    x = 323,964.57

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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.