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Finding the Fourth Proportional to 503,781.93, 695,357.87 and 342,906.21

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Solution

The fourth proportional to 503,781.93, 695,357.87 and 342,906.21 is: 473,305.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,781.93 : 695,357.87 = 342,906.21 : x
  2. Step 2: Convert to fraction form
    503,781.93/695,357.87 = 342,906.21/x
  3. Step 3: Cross multiply
    503,781.93x = 695,357.87 × 342,906.21
  4. Step 4: Simplify right side
    503,781.93x = 238,442,530,080.84
  5. Step 5: Solve for x
    x = 238,442,530,080.84/503,781.93
  6. Step 6: Final answer
    x = 473,305.05

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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.