Home / 709,464.63-979,081.84-387,195.33

Finding the Fourth Proportional to 709,464.63, 979,081.84 and 387,195.33

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Solution

The fourth proportional to 709,464.63, 979,081.84 and 387,195.33 is: 534,340.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,464.63 : 979,081.84 = 387,195.33 : x
  2. Step 2: Convert to fraction form
    709,464.63/979,081.84 = 387,195.33/x
  3. Step 3: Cross multiply
    709,464.63x = 979,081.84 × 387,195.33
  4. Step 4: Simplify right side
    709,464.63x = 379,095,916,135.81
  5. Step 5: Solve for x
    x = 379,095,916,135.81/709,464.63
  6. Step 6: Final answer
    x = 534,340.83

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Double scale
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Similar ratio
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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.