Home / 878,240.15-1,211,600.19-587,945.21

Finding the Fourth Proportional to 878,240.15, 1,211,600.19 and 587,945.21

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Solution

The fourth proportional to 878,240.15, 1,211,600.19 and 587,945.21 is: 811,115.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,240.15 : 1,211,600.19 = 587,945.21 : x
  2. Step 2: Convert to fraction form
    878,240.15/1,211,600.19 = 587,945.21/x
  3. Step 3: Cross multiply
    878,240.15x = 1,211,600.19 × 587,945.21
  4. Step 4: Simplify right side
    878,240.15x = 712,354,528,145.59
  5. Step 5: Solve for x
    x = 712,354,528,145.59/878,240.15
  6. Step 6: Final answer
    x = 811,115.88

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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.