Home / 1,259,288.40-1,888,932.60-511,870.80

Finding the Fourth Proportional to 1,259,288.40, 1,888,932.60 and 511,870.80

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Solution

The fourth proportional to 1,259,288.40, 1,888,932.60 and 511,870.80 is: 767,806.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,288.40 : 1,888,932.60 = 511,870.80 : x
  2. Step 2: Convert to fraction form
    1,259,288.40/1,888,932.60 = 511,870.80/x
  3. Step 3: Cross multiply
    1,259,288.40x = 1,888,932.60 × 511,870.80
  4. Step 4: Simplify right side
    1,259,288.40x = 966,889,441,108.08
  5. Step 5: Solve for x
    x = 966,889,441,108.08/1,259,288.40
  6. Step 6: Final answer
    x = 767,806.20

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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.