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Finding the Fourth Proportional to 571,393.47, 788,531.89 and 313,293.98

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Solution

The fourth proportional to 571,393.47, 788,531.89 and 313,293.98 is: 432,350.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,393.47 : 788,531.89 = 313,293.98 : x
  2. Step 2: Convert to fraction form
    571,393.47/788,531.89 = 313,293.98/x
  3. Step 3: Cross multiply
    571,393.47x = 788,531.89 × 313,293.98
  4. Step 4: Simplify right side
    571,393.47x = 247,042,290,633.91
  5. Step 5: Solve for x
    x = 247,042,290,633.91/571,393.47
  6. Step 6: Final answer
    x = 432,350.57

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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.