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Finding the Fourth Proportional to 1,983,437.60, 2,978,266.80 and 1,143,629.60

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Solution

The fourth proportional to 1,983,437.60, 2,978,266.80 and 1,143,629.60 is: 1,717,237.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983,437.60 : 2,978,266.80 = 1,143,629.60 : x
  2. Step 2: Convert to fraction form
    1,983,437.60/2,978,266.80 = 1,143,629.60/x
  3. Step 3: Cross multiply
    1,983,437.60x = 2,978,266.80 × 1,143,629.60
  4. Step 4: Simplify right side
    1,983,437.60x = 3,406,034,069,177.28
  5. Step 5: Solve for x
    x = 3,406,034,069,177.28/1,983,437.60
  6. Step 6: Final answer
    x = 1,717,237.82

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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.