Home / 789,039.20-1,182,781.20-389,741.60

Finding the Fourth Proportional to 789,039.20, 1,182,781.20 and 389,741.60

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Solution

The fourth proportional to 789,039.20, 1,182,781.20 and 389,741.60 is: 584,228.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,039.20 : 1,182,781.20 = 389,741.60 : x
  2. Step 2: Convert to fraction form
    789,039.20/1,182,781.20 = 389,741.60/x
  3. Step 3: Cross multiply
    789,039.20x = 1,182,781.20 × 389,741.60
  4. Step 4: Simplify right side
    789,039.20x = 460,979,037,337.92
  5. Step 5: Solve for x
    x = 460,979,037,337.92/789,039.20
  6. Step 6: Final answer
    x = 584,228.31

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.