Home / 1,339,940.20-2,009,276.70-779,146.60

Finding the Fourth Proportional to 1,339,940.20, 2,009,276.70 and 779,146.60

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Solution

The fourth proportional to 1,339,940.20, 2,009,276.70 and 779,146.60 is: 1,168,351.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339,940.20 : 2,009,276.70 = 779,146.60 : x
  2. Step 2: Convert to fraction form
    1,339,940.20/2,009,276.70 = 779,146.60/x
  3. Step 3: Cross multiply
    1,339,940.20x = 2,009,276.70 × 779,146.60
  4. Step 4: Simplify right side
    1,339,940.20x = 1,565,521,109,264.22
  5. Step 5: Solve for x
    x = 1,565,521,109,264.22/1,339,940.20
  6. Step 6: Final answer
    x = 1,168,351.48

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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.