Home / 839,160-1,258,939.26-278,194.50

Finding the Fourth Proportional to 839,160, 1,258,939.26 and 278,194.50

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Solution

The fourth proportional to 839,160, 1,258,939.26 and 278,194.50 is: 417,357.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,160 : 1,258,939.26 = 278,194.50 : x
  2. Step 2: Convert to fraction form
    839,160/1,258,939.26 = 278,194.50/x
  3. Step 3: Cross multiply
    839,160x = 1,258,939.26 × 278,194.50
  4. Step 4: Simplify right side
    839,160x = 350,229,977,966.07
  5. Step 5: Solve for x
    x = 350,229,977,966.07/839,160
  6. Step 6: Final answer
    x = 417,357.81

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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.