Home / 872,648.28-1,204,238.61-485,461.80

Finding the Fourth Proportional to 872,648.28, 1,204,238.61 and 485,461.80

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Solution

The fourth proportional to 872,648.28, 1,204,238.61 and 485,461.80 is: 669,928.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,648.28 : 1,204,238.61 = 485,461.80 : x
  2. Step 2: Convert to fraction form
    872,648.28/1,204,238.61 = 485,461.80/x
  3. Step 3: Cross multiply
    872,648.28x = 1,204,238.61 × 485,461.80
  4. Step 4: Simplify right side
    872,648.28x = 584,611,843,240.10
  5. Step 5: Solve for x
    x = 584,611,843,240.10/872,648.28
  6. Step 6: Final answer
    x = 669,928.37

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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.