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Finding the Fourth Proportional to 555,396.98, 765,911.16 and 469,357.97

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Solution

The fourth proportional to 555,396.98, 765,911.16 and 469,357.97 is: 647,260.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,396.98 : 765,911.16 = 469,357.97 : x
  2. Step 2: Convert to fraction form
    555,396.98/765,911.16 = 469,357.97/x
  3. Step 3: Cross multiply
    555,396.98x = 765,911.16 × 469,357.97
  4. Step 4: Simplify right side
    555,396.98x = 359,486,503,428.39
  5. Step 5: Solve for x
    x = 359,486,503,428.39/555,396.98
  6. Step 6: Final answer
    x = 647,260.46

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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.