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Finding the Fourth Proportional to 1,295,725.60, 1,942,810.80 and 665,869.60

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Solution

The fourth proportional to 1,295,725.60, 1,942,810.80 and 665,869.60 is: 998,404.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,725.60 : 1,942,810.80 = 665,869.60 : x
  2. Step 2: Convert to fraction form
    1,295,725.60/1,942,810.80 = 665,869.60/x
  3. Step 3: Cross multiply
    1,295,725.60x = 1,942,810.80 × 665,869.60
  4. Step 4: Simplify right side
    1,295,725.60x = 1,293,658,650,271.68
  5. Step 5: Solve for x
    x = 1,293,658,650,271.68/1,295,725.60
  6. Step 6: Final answer
    x = 998,404.79

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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.