Home / 839,964.30-1,259,946.45-278,998.80

Finding the Fourth Proportional to 839,964.30, 1,259,946.45 and 278,998.80

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Solution

The fourth proportional to 839,964.30, 1,259,946.45 and 278,998.80 is: 418,498.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,964.30 : 1,259,946.45 = 278,998.80 : x
  2. Step 2: Convert to fraction form
    839,964.30/1,259,946.45 = 278,998.80/x
  3. Step 3: Cross multiply
    839,964.30x = 1,259,946.45 × 278,998.80
  4. Step 4: Simplify right side
    839,964.30x = 351,523,547,614.26
  5. Step 5: Solve for x
    x = 351,523,547,614.26/839,964.30
  6. Step 6: Final answer
    x = 418,498.20

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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.