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Finding the Fourth Proportional to 1,206,984.80, 1,811,643.60 and 734,592.80

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Solution

The fourth proportional to 1,206,984.80, 1,811,643.60 and 734,592.80 is: 1,102,599.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206,984.80 : 1,811,643.60 = 734,592.80 : x
  2. Step 2: Convert to fraction form
    1,206,984.80/1,811,643.60 = 734,592.80/x
  3. Step 3: Cross multiply
    1,206,984.80x = 1,811,643.60 × 734,592.80
  4. Step 4: Simplify right side
    1,206,984.80x = 1,330,820,344,726.08
  5. Step 5: Solve for x
    x = 1,330,820,344,726.08/1,206,984.80
  6. Step 6: Final answer
    x = 1,102,599.09

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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.