Home / 1,221,369.15-1,685,499.60-677,540.62

Finding the Fourth Proportional to 1,221,369.15, 1,685,499.60 and 677,540.62

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Solution

The fourth proportional to 1,221,369.15, 1,685,499.60 and 677,540.62 is: 935,011.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,369.15 : 1,685,499.60 = 677,540.62 : x
  2. Step 2: Convert to fraction form
    1,221,369.15/1,685,499.60 = 677,540.62/x
  3. Step 3: Cross multiply
    1,221,369.15x = 1,685,499.60 × 677,540.62
  4. Step 4: Simplify right side
    1,221,369.15x = 1,141,994,443,993.75
  5. Step 5: Solve for x
    x = 1,141,994,443,993.75/1,221,369.15
  6. Step 6: Final answer
    x = 935,011.70

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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.