Home / 709,768.15-979,494.87-387,491.83

Finding the Fourth Proportional to 709,768.15, 979,494.87 and 387,491.83

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Solution

The fourth proportional to 709,768.15, 979,494.87 and 387,491.83 is: 534,746.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,768.15 : 979,494.87 = 387,491.83 : x
  2. Step 2: Convert to fraction form
    709,768.15/979,494.87 = 387,491.83/x
  3. Step 3: Cross multiply
    709,768.15x = 979,494.87 × 387,491.83
  4. Step 4: Simplify right side
    709,768.15x = 379,546,259,651.91
  5. Step 5: Solve for x
    x = 379,546,259,651.91/709,768.15
  6. Step 6: Final answer
    x = 534,746.82

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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.