Home / 678,124.70-1,017,187.05-394,300.70

Finding the Fourth Proportional to 678,124.70, 1,017,187.05 and 394,300.70

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Solution

The fourth proportional to 678,124.70, 1,017,187.05 and 394,300.70 is: 591,451.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,124.70 : 1,017,187.05 = 394,300.70 : x
  2. Step 2: Convert to fraction form
    678,124.70/1,017,187.05 = 394,300.70/x
  3. Step 3: Cross multiply
    678,124.70x = 1,017,187.05 × 394,300.70
  4. Step 4: Simplify right side
    678,124.70x = 401,077,565,845.94
  5. Step 5: Solve for x
    x = 401,077,565,845.94/678,124.70
  6. Step 6: Final answer
    x = 591,451.05

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Similar ratio
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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.