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Finding the Fourth Proportional to 1,080,769.78, 1,621,187.70 and 370,787.86

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Solution

The fourth proportional to 1,080,769.78, 1,621,187.70 and 370,787.86 is: 556,193.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080,769.78 : 1,621,187.70 = 370,787.86 : x
  2. Step 2: Convert to fraction form
    1,080,769.78/1,621,187.70 = 370,787.86/x
  3. Step 3: Cross multiply
    1,080,769.78x = 1,621,187.70 × 370,787.86
  4. Step 4: Simplify right side
    1,080,769.78x = 601,116,707,981.44
  5. Step 5: Solve for x
    x = 601,116,707,981.44/1,080,769.78
  6. Step 6: Final answer
    x = 556,193.12

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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.