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Finding the Fourth Proportional to 571,637.25, 788,842.80 and 313,509.29

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Solution

The fourth proportional to 571,637.25, 788,842.80 and 313,509.29 is: 432,633.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,637.25 : 788,842.80 = 313,509.29 : x
  2. Step 2: Convert to fraction form
    571,637.25/788,842.80 = 313,509.29/x
  3. Step 3: Cross multiply
    571,637.25x = 788,842.80 × 313,509.29
  4. Step 4: Simplify right side
    571,637.25x = 247,309,542,205.40
  5. Step 5: Solve for x
    x = 247,309,542,205.40/571,637.25
  6. Step 6: Final answer
    x = 432,633.71

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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.