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Finding the Fourth Proportional to 3,317,775.20, 4,978,597.28 and 1,398,569.03

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Solution

The fourth proportional to 3,317,775.20, 4,978,597.28 and 1,398,569.03 is: 2,098,668.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,317,775.20 : 4,978,597.28 = 1,398,569.03 : x
  2. Step 2: Convert to fraction form
    3,317,775.20/4,978,597.28 = 1,398,569.03/x
  3. Step 3: Cross multiply
    3,317,775.20x = 4,978,597.28 × 1,398,569.03
  4. Step 4: Simplify right side
    3,317,775.20x = 6,962,911,936,764.41
  5. Step 5: Solve for x
    x = 6,962,911,936,764.41/3,317,775.20
  6. Step 6: Final answer
    x = 2,098,668.99

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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.