Home / 778,517.21-1,074,295.35-507,105.05

Finding the Fourth Proportional to 778,517.21, 1,074,295.35 and 507,105.05

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Solution

The fourth proportional to 778,517.21, 1,074,295.35 and 507,105.05 is: 699,766.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,517.21 : 1,074,295.35 = 507,105.05 : x
  2. Step 2: Convert to fraction form
    778,517.21/1,074,295.35 = 507,105.05/x
  3. Step 3: Cross multiply
    778,517.21x = 1,074,295.35 × 507,105.05
  4. Step 4: Simplify right side
    778,517.21x = 544,780,591,805.04
  5. Step 5: Solve for x
    x = 544,780,591,805.04/778,517.21
  6. Step 6: Final answer
    x = 699,766.93

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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.