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Finding the Fourth Proportional to 1,754,456.40, 2,629,643.40 and 807,922.80

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Solution

The fourth proportional to 1,754,456.40, 2,629,643.40 and 807,922.80 is: 1,210,944.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,754,456.40 : 2,629,643.40 = 807,922.80 : x
  2. Step 2: Convert to fraction form
    1,754,456.40/2,629,643.40 = 807,922.80/x
  3. Step 3: Cross multiply
    1,754,456.40x = 2,629,643.40 × 807,922.80
  4. Step 4: Simplify right side
    1,754,456.40x = 2,124,548,858,729.52
  5. Step 5: Solve for x
    x = 2,124,548,858,729.52/1,754,456.40
  6. Step 6: Final answer
    x = 1,210,944.23

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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.