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Finding the Fourth Proportional to 1,936,473.60, 2,904,019.20 and 674,342.40

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Solution

The fourth proportional to 1,936,473.60, 2,904,019.20 and 674,342.40 is: 1,011,272.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,936,473.60 : 2,904,019.20 = 674,342.40 : x
  2. Step 2: Convert to fraction form
    1,936,473.60/2,904,019.20 = 674,342.40/x
  3. Step 3: Cross multiply
    1,936,473.60x = 2,904,019.20 × 674,342.40
  4. Step 4: Simplify right side
    1,936,473.60x = 1,958,303,276,974.08
  5. Step 5: Solve for x
    x = 1,958,303,276,974.08/1,936,473.60
  6. Step 6: Final answer
    x = 1,011,272.90

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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.