Home / 861,288.72-1,188,569.76-479,309.04

Finding the Fourth Proportional to 861,288.72, 1,188,569.76 and 479,309.04

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Solution

The fourth proportional to 861,288.72, 1,188,569.76 and 479,309.04 is: 661,441.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,288.72 : 1,188,569.76 = 479,309.04 : x
  2. Step 2: Convert to fraction form
    861,288.72/1,188,569.76 = 479,309.04/x
  3. Step 3: Cross multiply
    861,288.72x = 1,188,569.76 × 479,309.04
  4. Step 4: Simplify right side
    861,288.72x = 569,692,230,638.63
  5. Step 5: Solve for x
    x = 569,692,230,638.63/861,288.72
  6. Step 6: Final answer
    x = 661,441.65

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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.