Home / 1,188,212.30-1,782,318.45-869,347.70

Finding the Fourth Proportional to 1,188,212.30, 1,782,318.45 and 869,347.70

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Solution

The fourth proportional to 1,188,212.30, 1,782,318.45 and 869,347.70 is: 1,304,021.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,212.30 : 1,782,318.45 = 869,347.70 : x
  2. Step 2: Convert to fraction form
    1,188,212.30/1,782,318.45 = 869,347.70/x
  3. Step 3: Cross multiply
    1,188,212.30x = 1,782,318.45 × 869,347.70
  4. Step 4: Simplify right side
    1,188,212.30x = 1,549,454,445,175.07
  5. Step 5: Solve for x
    x = 1,549,454,445,175.07/1,188,212.30
  6. Step 6: Final answer
    x = 1,304,021.55

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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.