Home / 1,380,821.23-2,071,349.39-421,492.31

Finding the Fourth Proportional to 1,380,821.23, 2,071,349.39 and 421,492.31

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Solution

The fourth proportional to 1,380,821.23, 2,071,349.39 and 421,492.31 is: 632,274.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,821.23 : 2,071,349.39 = 421,492.31 : x
  2. Step 2: Convert to fraction form
    1,380,821.23/2,071,349.39 = 421,492.31/x
  3. Step 3: Cross multiply
    1,380,821.23x = 2,071,349.39 × 421,492.31
  4. Step 4: Simplify right side
    1,380,821.23x = 873,057,836,487.29
  5. Step 5: Solve for x
    x = 873,057,836,487.29/1,380,821.23
  6. Step 6: Final answer
    x = 632,274.35

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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.