Home / 1,200,487.70-1,656,815.97-691,289.30

Finding the Fourth Proportional to 1,200,487.70, 1,656,815.97 and 691,289.30

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Solution

The fourth proportional to 1,200,487.70, 1,656,815.97 and 691,289.30 is: 954,061.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,487.70 : 1,656,815.97 = 691,289.30 : x
  2. Step 2: Convert to fraction form
    1,200,487.70/1,656,815.97 = 691,289.30/x
  3. Step 3: Cross multiply
    1,200,487.70x = 1,656,815.97 × 691,289.30
  4. Step 4: Simplify right side
    1,200,487.70x = 1,145,339,152,130.12
  5. Step 5: Solve for x
    x = 1,145,339,152,130.12/1,200,487.70
  6. Step 6: Final answer
    x = 954,061.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.