Home / 778,739.25-1,074,660.17-421,043.25

Finding the Fourth Proportional to 778,739.25, 1,074,660.17 and 421,043.25

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Solution

The fourth proportional to 778,739.25, 1,074,660.17 and 421,043.25 is: 581,039.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,739.25 : 1,074,660.17 = 421,043.25 : x
  2. Step 2: Convert to fraction form
    778,739.25/1,074,660.17 = 421,043.25/x
  3. Step 3: Cross multiply
    778,739.25x = 1,074,660.17 × 421,043.25
  4. Step 4: Simplify right side
    778,739.25x = 452,478,408,517.14
  5. Step 5: Solve for x
    x = 452,478,408,517.14/778,739.25
  6. Step 6: Final answer
    x = 581,039.69

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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.