Home / 878,078.80-1,316,837.94-278,899.73

Finding the Fourth Proportional to 878,078.80, 1,316,837.94 and 278,899.73

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Solution

The fourth proportional to 878,078.80, 1,316,837.94 and 278,899.73 is: 418,260.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,078.80 : 1,316,837.94 = 278,899.73 : x
  2. Step 2: Convert to fraction form
    878,078.80/1,316,837.94 = 278,899.73/x
  3. Step 3: Cross multiply
    878,078.80x = 1,316,837.94 × 278,899.73
  4. Step 4: Simplify right side
    878,078.80x = 367,265,745,919.76
  5. Step 5: Solve for x
    x = 367,265,745,919.76/878,078.80
  6. Step 6: Final answer
    x = 418,260.58

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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.