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Finding the Fourth Proportional to 1,275,604.40, 1,916,257.80 and 1,065,652.40

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Solution

The fourth proportional to 1,275,604.40, 1,916,257.80 and 1,065,652.40 is: 1,600,860.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,604.40 : 1,916,257.80 = 1,065,652.40 : x
  2. Step 2: Convert to fraction form
    1,275,604.40/1,916,257.80 = 1,065,652.40/x
  3. Step 3: Cross multiply
    1,275,604.40x = 1,916,257.80 × 1,065,652.40
  4. Step 4: Simplify right side
    1,275,604.40x = 2,042,064,723,588.72
  5. Step 5: Solve for x
    x = 2,042,064,723,588.72/1,275,604.40
  6. Step 6: Final answer
    x = 1,600,860.52

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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.