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Finding the Fourth Proportional to 539,863.23, 745,055.31 and 310,494.77

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Solution

The fourth proportional to 539,863.23, 745,055.31 and 310,494.77 is: 428,508.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,863.23 : 745,055.31 = 310,494.77 : x
  2. Step 2: Convert to fraction form
    539,863.23/745,055.31 = 310,494.77/x
  3. Step 3: Cross multiply
    539,863.23x = 745,055.31 × 310,494.77
  4. Step 4: Simplify right side
    539,863.23x = 231,335,777,348.77
  5. Step 5: Solve for x
    x = 231,335,777,348.77/539,863.23
  6. Step 6: Final answer
    x = 428,508.12

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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.