Home / 1,278,531.80-1,916,469.30-520,047.80

Finding the Fourth Proportional to 1,278,531.80, 1,916,469.30 and 520,047.80

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Solution

The fourth proportional to 1,278,531.80, 1,916,469.30 and 520,047.80 is: 779,531.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,531.80 : 1,916,469.30 = 520,047.80 : x
  2. Step 2: Convert to fraction form
    1,278,531.80/1,916,469.30 = 520,047.80/x
  3. Step 3: Cross multiply
    1,278,531.80x = 1,916,469.30 × 520,047.80
  4. Step 4: Simplify right side
    1,278,531.80x = 996,655,643,232.54
  5. Step 5: Solve for x
    x = 996,655,643,232.54/1,278,531.80
  6. Step 6: Final answer
    x = 779,531.37

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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.