Home / 819,895.65-1,229,808.06-280,200.12

Finding the Fourth Proportional to 819,895.65, 1,229,808.06 and 280,200.12

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Solution

The fourth proportional to 819,895.65, 1,229,808.06 and 280,200.12 is: 420,288.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,895.65 : 1,229,808.06 = 280,200.12 : x
  2. Step 2: Convert to fraction form
    819,895.65/1,229,808.06 = 280,200.12/x
  3. Step 3: Cross multiply
    819,895.65x = 1,229,808.06 × 280,200.12
  4. Step 4: Simplify right side
    819,895.65x = 344,592,365,988.97
  5. Step 5: Solve for x
    x = 344,592,365,988.97/819,895.65
  6. Step 6: Final answer
    x = 420,288.08

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1.5x scale

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.