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Finding the Fourth Proportional to 573,418.82, 791,323.36 and 315,309.14

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Solution

The fourth proportional to 573,418.82, 791,323.36 and 315,309.14 is: 435,129.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,418.82 : 791,323.36 = 315,309.14 : x
  2. Step 2: Convert to fraction form
    573,418.82/791,323.36 = 315,309.14/x
  3. Step 3: Cross multiply
    573,418.82x = 791,323.36 × 315,309.14
  4. Step 4: Simplify right side
    573,418.82x = 249,511,488,103.51
  5. Step 5: Solve for x
    x = 249,511,488,103.51/573,418.82
  6. Step 6: Final answer
    x = 435,129.58

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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.