Home / 878,399.40-1,316,724.30-404,257.80

Finding the Fourth Proportional to 878,399.40, 1,316,724.30 and 404,257.80

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Solution

The fourth proportional to 878,399.40, 1,316,724.30 and 404,257.80 is: 605,984.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,399.40 : 1,316,724.30 = 404,257.80 : x
  2. Step 2: Convert to fraction form
    878,399.40/1,316,724.30 = 404,257.80/x
  3. Step 3: Cross multiply
    878,399.40x = 1,316,724.30 × 404,257.80
  4. Step 4: Simplify right side
    878,399.40x = 532,296,068,724.54
  5. Step 5: Solve for x
    x = 532,296,068,724.54/878,399.40
  6. Step 6: Final answer
    x = 605,984.10

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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.