Home / 778,563.46-1,074,419.13-420,867.46

Finding the Fourth Proportional to 778,563.46, 1,074,419.13 and 420,867.46

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Solution

The fourth proportional to 778,563.46, 1,074,419.13 and 420,867.46 is: 580,797.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,563.46 : 1,074,419.13 = 420,867.46 : x
  2. Step 2: Convert to fraction form
    778,563.46/1,074,419.13 = 420,867.46/x
  3. Step 3: Cross multiply
    778,563.46x = 1,074,419.13 × 420,867.46
  4. Step 4: Simplify right side
    778,563.46x = 452,188,050,218.51
  5. Step 5: Solve for x
    x = 452,188,050,218.51/778,563.46
  6. Step 6: Final answer
    x = 580,797.94

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Double scale
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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.