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Finding the Fourth Proportional to 722,751.05, 1,085,690.69 and 469,901.45

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Solution

The fourth proportional to 722,751.05, 1,085,690.69 and 469,901.45 is: 705,869.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,751.05 : 1,085,690.69 = 469,901.45 : x
  2. Step 2: Convert to fraction form
    722,751.05/1,085,690.69 = 469,901.45/x
  3. Step 3: Cross multiply
    722,751.05x = 1,085,690.69 × 469,901.45
  4. Step 4: Simplify right side
    722,751.05x = 510,167,621,704.54
  5. Step 5: Solve for x
    x = 510,167,621,704.54/722,751.05
  6. Step 6: Final answer
    x = 705,869.09

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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.