Home / 855,439.20-1,180,560.90-492,856.47

Finding the Fourth Proportional to 855,439.20, 1,180,560.90 and 492,856.47

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Solution

The fourth proportional to 855,439.20, 1,180,560.90 and 492,856.47 is: 680,173.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,439.20 : 1,180,560.90 = 492,856.47 : x
  2. Step 2: Convert to fraction form
    855,439.20/1,180,560.90 = 492,856.47/x
  3. Step 3: Cross multiply
    855,439.20x = 1,180,560.90 × 492,856.47
  4. Step 4: Simplify right side
    855,439.20x = 581,847,077,794.02
  5. Step 5: Solve for x
    x = 581,847,077,794.02/855,439.20
  6. Step 6: Final answer
    x = 680,173.50

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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.