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Finding the Fourth Proportional to 1,943,807.60, 2,914,836.60 and 745,331.60

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Solution

The fourth proportional to 1,943,807.60, 2,914,836.60 and 745,331.60 is: 1,117,661.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943,807.60 : 2,914,836.60 = 745,331.60 : x
  2. Step 2: Convert to fraction form
    1,943,807.60/2,914,836.60 = 745,331.60/x
  3. Step 3: Cross multiply
    1,943,807.60x = 2,914,836.60 × 745,331.60
  4. Step 4: Simplify right side
    1,943,807.60x = 2,172,519,826,816.56
  5. Step 5: Solve for x
    x = 2,172,519,826,816.56/1,943,807.60
  6. Step 6: Final answer
    x = 1,117,661.97

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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.