Home / 709,436.97-979,043.76-387,167.76

Finding the Fourth Proportional to 709,436.97, 979,043.76 and 387,167.76

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Solution

The fourth proportional to 709,436.97, 979,043.76 and 387,167.76 is: 534,302.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,436.97 : 979,043.76 = 387,167.76 : x
  2. Step 2: Convert to fraction form
    709,436.97/979,043.76 = 387,167.76/x
  3. Step 3: Cross multiply
    709,436.97x = 979,043.76 × 387,167.76
  4. Step 4: Simplify right side
    709,436.97x = 379,054,179,501.18
  5. Step 5: Solve for x
    x = 379,054,179,501.18/709,436.97
  6. Step 6: Final answer
    x = 534,302.83

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1.5x scale

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.