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Finding the Fourth Proportional to 707,296.43, 976,081.54 and 385,015.79

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Solution

The fourth proportional to 707,296.43, 976,081.54 and 385,015.79 is: 531,328.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,296.43 : 976,081.54 = 385,015.79 : x
  2. Step 2: Convert to fraction form
    707,296.43/976,081.54 = 385,015.79/x
  3. Step 3: Cross multiply
    707,296.43x = 976,081.54 × 385,015.79
  4. Step 4: Simplify right side
    707,296.43x = 375,806,805,227.52
  5. Step 5: Solve for x
    x = 375,806,805,227.52/707,296.43
  6. Step 6: Final answer
    x = 531,328.58

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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.