Home / 1,098,043.20-1,647,064.80-779,178.60

Finding the Fourth Proportional to 1,098,043.20, 1,647,064.80 and 779,178.60

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Solution

The fourth proportional to 1,098,043.20, 1,647,064.80 and 779,178.60 is: 1,168,767.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,043.20 : 1,647,064.80 = 779,178.60 : x
  2. Step 2: Convert to fraction form
    1,098,043.20/1,647,064.80 = 779,178.60/x
  3. Step 3: Cross multiply
    1,098,043.20x = 1,647,064.80 × 779,178.60
  4. Step 4: Simplify right side
    1,098,043.20x = 1,283,357,644,973.28
  5. Step 5: Solve for x
    x = 1,283,357,644,973.28/1,098,043.20
  6. Step 6: Final answer
    x = 1,168,767.90

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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.