Home / 1,178,996.79-1,768,868.86-420,821.47

Finding the Fourth Proportional to 1,178,996.79, 1,768,868.86 and 420,821.47

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Solution

The fourth proportional to 1,178,996.79, 1,768,868.86 and 420,821.47 is: 631,365.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,996.79 : 1,768,868.86 = 420,821.47 : x
  2. Step 2: Convert to fraction form
    1,178,996.79/1,768,868.86 = 420,821.47/x
  3. Step 3: Cross multiply
    1,178,996.79x = 1,768,868.86 × 420,821.47
  4. Step 4: Simplify right side
    1,178,996.79x = 744,377,993,902.42
  5. Step 5: Solve for x
    x = 744,377,993,902.42/1,178,996.79
  6. Step 6: Final answer
    x = 631,365.58

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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.