Home / 2,119,505.90-3,178,274.70-920,811.20

Finding the Fourth Proportional to 2,119,505.90, 3,178,274.70 and 920,811.20

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Solution

The fourth proportional to 2,119,505.90, 3,178,274.70 and 920,811.20 is: 1,380,789.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119,505.90 : 3,178,274.70 = 920,811.20 : x
  2. Step 2: Convert to fraction form
    2,119,505.90/3,178,274.70 = 920,811.20/x
  3. Step 3: Cross multiply
    2,119,505.90x = 3,178,274.70 × 920,811.20
  4. Step 4: Simplify right side
    2,119,505.90x = 2,926,590,940,436.64
  5. Step 5: Solve for x
    x = 2,926,590,940,436.64/2,119,505.90
  6. Step 6: Final answer
    x = 1,380,789.24

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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.