Home / 878,077.80-1,316,836.44-278,898.73

Finding the Fourth Proportional to 878,077.80, 1,316,836.44 and 278,898.73

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Solution

The fourth proportional to 878,077.80, 1,316,836.44 and 278,898.73 is: 418,259.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,077.80 : 1,316,836.44 = 278,898.73 : x
  2. Step 2: Convert to fraction form
    878,077.80/1,316,836.44 = 278,898.73/x
  3. Step 3: Cross multiply
    878,077.80x = 1,316,836.44 × 278,898.73
  4. Step 4: Simplify right side
    878,077.80x = 367,264,007,441.63
  5. Step 5: Solve for x
    x = 367,264,007,441.63/878,077.80
  6. Step 6: Final answer
    x = 418,259.07

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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.