Home / 1,380,919.16-2,071,329.75-421,336.01

Finding the Fourth Proportional to 1,380,919.16, 2,071,329.75 and 421,336.01

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Solution

The fourth proportional to 1,380,919.16, 2,071,329.75 and 421,336.01 is: 631,989.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,919.16 : 2,071,329.75 = 421,336.01 : x
  2. Step 2: Convert to fraction form
    1,380,919.16/2,071,329.75 = 421,336.01/x
  3. Step 3: Cross multiply
    1,380,919.16x = 2,071,329.75 × 421,336.01
  4. Step 4: Simplify right side
    1,380,919.16x = 872,725,801,902.65
  5. Step 5: Solve for x
    x = 872,725,801,902.65/1,380,919.16
  6. Step 6: Final answer
    x = 631,989.06

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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.