Home / 847,308.68-1,271,119.50-278,721.80

Finding the Fourth Proportional to 847,308.68, 1,271,119.50 and 278,721.80

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Solution

The fourth proportional to 847,308.68, 1,271,119.50 and 278,721.80 is: 418,134.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,308.68 : 1,271,119.50 = 278,721.80 : x
  2. Step 2: Convert to fraction form
    847,308.68/1,271,119.50 = 278,721.80/x
  3. Step 3: Cross multiply
    847,308.68x = 1,271,119.50 × 278,721.80
  4. Step 4: Simplify right side
    847,308.68x = 354,288,715,055.10
  5. Step 5: Solve for x
    x = 354,288,715,055.10/847,308.68
  6. Step 6: Final answer
    x = 418,134.17

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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.