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Finding the Fourth Proportional to 571,691.25, 788,935.05 and 313,570.30

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Solution

The fourth proportional to 571,691.25, 788,935.05 and 313,570.30 is: 432,727.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,691.25 : 788,935.05 = 313,570.30 : x
  2. Step 2: Convert to fraction form
    571,691.25/788,935.05 = 313,570.30/x
  3. Step 3: Cross multiply
    571,691.25x = 788,935.05 × 313,570.30
  4. Step 4: Simplify right side
    571,691.25x = 247,386,600,309.02
  5. Step 5: Solve for x
    x = 247,386,600,309.02/571,691.25
  6. Step 6: Final answer
    x = 432,727.63

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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.