Home / 1,440,255.82-2,160,964.65-640,990.70

Finding the Fourth Proportional to 1,440,255.82, 2,160,964.65 and 640,990.70

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Solution

The fourth proportional to 1,440,255.82, 2,160,964.65 and 640,990.70 is: 961,744.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,255.82 : 2,160,964.65 = 640,990.70 : x
  2. Step 2: Convert to fraction form
    1,440,255.82/2,160,964.65 = 640,990.70/x
  3. Step 3: Cross multiply
    1,440,255.82x = 2,160,964.65 × 640,990.70
  4. Step 4: Simplify right side
    1,440,255.82x = 1,385,158,232,873.93
  5. Step 5: Solve for x
    x = 1,385,158,232,873.93/1,440,255.82
  6. Step 6: Final answer
    x = 961,744.58

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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.