Home / 857,724.32-1,183,487.28-518,209.76

Finding the Fourth Proportional to 857,724.32, 1,183,487.28 and 518,209.76

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Solution

The fourth proportional to 857,724.32, 1,183,487.28 and 518,209.76 is: 715,025.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,724.32 : 1,183,487.28 = 518,209.76 : x
  2. Step 2: Convert to fraction form
    857,724.32/1,183,487.28 = 518,209.76/x
  3. Step 3: Cross multiply
    857,724.32x = 1,183,487.28 × 518,209.76
  4. Step 4: Simplify right side
    857,724.32x = 613,294,659,331.85
  5. Step 5: Solve for x
    x = 613,294,659,331.85/857,724.32
  6. Step 6: Final answer
    x = 715,025.38

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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.