Home / 2,118,415.68-3,175,833.60-919,431.36

Finding the Fourth Proportional to 2,118,415.68, 3,175,833.60 and 919,431.36

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Solution

The fourth proportional to 2,118,415.68, 3,175,833.60 and 919,431.36 is: 1,378,370.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118,415.68 : 3,175,833.60 = 919,431.36 : x
  2. Step 2: Convert to fraction form
    2,118,415.68/3,175,833.60 = 919,431.36/x
  3. Step 3: Cross multiply
    2,118,415.68x = 3,175,833.60 × 919,431.36
  4. Step 4: Simplify right side
    2,118,415.68x = 2,919,961,005,981.70
  5. Step 5: Solve for x
    x = 2,919,961,005,981.70/2,118,415.68
  6. Step 6: Final answer
    x = 1,378,370.18

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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.