Home / 1,206,436.80-1,808,912.16-407,642.88

Finding the Fourth Proportional to 1,206,436.80, 1,808,912.16 and 407,642.88

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Solution

The fourth proportional to 1,206,436.80, 1,808,912.16 and 407,642.88 is: 611,213.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206,436.80 : 1,808,912.16 = 407,642.88 : x
  2. Step 2: Convert to fraction form
    1,206,436.80/1,808,912.16 = 407,642.88/x
  3. Step 3: Cross multiply
    1,206,436.80x = 1,808,912.16 × 407,642.88
  4. Step 4: Simplify right side
    1,206,436.80x = 737,390,162,569.42
  5. Step 5: Solve for x
    x = 737,390,162,569.42/1,206,436.80
  6. Step 6: Final answer
    x = 611,213.25

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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.