Home / 814,643.80-1,221,965.70-531,213.40

Finding the Fourth Proportional to 814,643.80, 1,221,965.70 and 531,213.40

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Solution

The fourth proportional to 814,643.80, 1,221,965.70 and 531,213.40 is: 796,820.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,643.80 : 1,221,965.70 = 531,213.40 : x
  2. Step 2: Convert to fraction form
    814,643.80/1,221,965.70 = 531,213.40/x
  3. Step 3: Cross multiply
    814,643.80x = 1,221,965.70 × 531,213.40
  4. Step 4: Simplify right side
    814,643.80x = 649,124,554,180.38
  5. Step 5: Solve for x
    x = 649,124,554,180.38/814,643.80
  6. Step 6: Final answer
    x = 796,820.10

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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.