Home / 1,098,972.30-1,648,458.45-780,107.70

Finding the Fourth Proportional to 1,098,972.30, 1,648,458.45 and 780,107.70

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Solution

The fourth proportional to 1,098,972.30, 1,648,458.45 and 780,107.70 is: 1,170,161.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,972.30 : 1,648,458.45 = 780,107.70 : x
  2. Step 2: Convert to fraction form
    1,098,972.30/1,648,458.45 = 780,107.70/x
  3. Step 3: Cross multiply
    1,098,972.30x = 1,648,458.45 × 780,107.70
  4. Step 4: Simplify right side
    1,098,972.30x = 1,285,975,129,975.07
  5. Step 5: Solve for x
    x = 1,285,975,129,975.07/1,098,972.30
  6. Step 6: Final answer
    x = 1,170,161.55

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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.