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Finding the Fourth Proportional to 1,977,793.60, 2,964,616.80 and 779,252.80

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Solution

The fourth proportional to 1,977,793.60, 2,964,616.80 and 779,252.80 is: 1,168,062.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977,793.60 : 2,964,616.80 = 779,252.80 : x
  2. Step 2: Convert to fraction form
    1,977,793.60/2,964,616.80 = 779,252.80/x
  3. Step 3: Cross multiply
    1,977,793.60x = 2,964,616.80 × 779,252.80
  4. Step 4: Simplify right side
    1,977,793.60x = 2,310,185,942,327.04
  5. Step 5: Solve for x
    x = 2,310,185,942,327.04/1,977,793.60
  6. Step 6: Final answer
    x = 1,168,062.20

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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.