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Finding the Fourth Proportional to 661,394.56, 912,719.97 and 359,588.56

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Solution

The fourth proportional to 661,394.56, 912,719.97 and 359,588.56 is: 496,229.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,394.56 : 912,719.97 = 359,588.56 : x
  2. Step 2: Convert to fraction form
    661,394.56/912,719.97 = 359,588.56/x
  3. Step 3: Cross multiply
    661,394.56x = 912,719.97 × 359,588.56
  4. Step 4: Simplify right side
    661,394.56x = 328,203,659,695.54
  5. Step 5: Solve for x
    x = 328,203,659,695.54/661,394.56
  6. Step 6: Final answer
    x = 496,229.75

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1.5x scale

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.