Home / 709,449.50-979,060.95-387,180.37

Finding the Fourth Proportional to 709,449.50, 979,060.95 and 387,180.37

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Solution

The fourth proportional to 709,449.50, 979,060.95 and 387,180.37 is: 534,320.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,449.50 : 979,060.95 = 387,180.37 : x
  2. Step 2: Convert to fraction form
    709,449.50/979,060.95 = 387,180.37/x
  3. Step 3: Cross multiply
    709,449.50x = 979,060.95 × 387,180.37
  4. Step 4: Simplify right side
    709,449.50x = 379,073,180,873.55
  5. Step 5: Solve for x
    x = 379,073,180,873.55/709,449.50
  6. Step 6: Final answer
    x = 534,320.17

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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.