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Finding the Fourth Proportional to 693,488.39, 957,010.85 and 387,564.55

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Solution

The fourth proportional to 693,488.39, 957,010.85 and 387,564.55 is: 534,837.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,488.39 : 957,010.85 = 387,564.55 : x
  2. Step 2: Convert to fraction form
    693,488.39/957,010.85 = 387,564.55/x
  3. Step 3: Cross multiply
    693,488.39x = 957,010.85 × 387,564.55
  4. Step 4: Simplify right side
    693,488.39x = 370,903,476,548.39
  5. Step 5: Solve for x
    x = 370,903,476,548.39/693,488.39
  6. Step 6: Final answer
    x = 534,837.33

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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.