Home / 709,949.04-979,734.42-387,661.38

Finding the Fourth Proportional to 709,949.04, 979,734.42 and 387,661.38

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Solution

The fourth proportional to 709,949.04, 979,734.42 and 387,661.38 is: 534,975.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,949.04 : 979,734.42 = 387,661.38 : x
  2. Step 2: Convert to fraction form
    709,949.04/979,734.42 = 387,661.38/x
  3. Step 3: Cross multiply
    709,949.04x = 979,734.42 × 387,661.38
  4. Step 4: Simplify right side
    709,949.04x = 379,805,197,290.70
  5. Step 5: Solve for x
    x = 379,805,197,290.70/709,949.04
  6. Step 6: Final answer
    x = 534,975.30

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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.