Home / 642,298.01-886,306.66-355,764.56

Finding the Fourth Proportional to 642,298.01, 886,306.66 and 355,764.56

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Solution

The fourth proportional to 642,298.01, 886,306.66 and 355,764.56 is: 490,919.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,298.01 : 886,306.66 = 355,764.56 : x
  2. Step 2: Convert to fraction form
    642,298.01/886,306.66 = 355,764.56/x
  3. Step 3: Cross multiply
    642,298.01x = 886,306.66 × 355,764.56
  4. Step 4: Simplify right side
    642,298.01x = 315,316,493,599.03
  5. Step 5: Solve for x
    x = 315,316,493,599.03/642,298.01
  6. Step 6: Final answer
    x = 490,919.31

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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.