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Finding the Fourth Proportional to 709,961.04, 979,751.16 and 387,673.56

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Solution

The fourth proportional to 709,961.04, 979,751.16 and 387,673.56 is: 534,992.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,961.04 : 979,751.16 = 387,673.56 : x
  2. Step 2: Convert to fraction form
    709,961.04/979,751.16 = 387,673.56/x
  3. Step 3: Cross multiply
    709,961.04x = 979,751.16 × 387,673.56
  4. Step 4: Simplify right side
    709,961.04x = 379,823,620,111.33
  5. Step 5: Solve for x
    x = 379,823,620,111.33/709,961.04
  6. Step 6: Final answer
    x = 534,992.20

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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.