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Finding the Fourth Proportional to 6,642,969.40, 9,964,454.10 and 1,851,398.20

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Solution

The fourth proportional to 6,642,969.40, 9,964,454.10 and 1,851,398.20 is: 2,777,097.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642,969.40 : 9,964,454.10 = 1,851,398.20 : x
  2. Step 2: Convert to fraction form
    6,642,969.40/9,964,454.10 = 1,851,398.20/x
  3. Step 3: Cross multiply
    6,642,969.40x = 9,964,454.10 × 1,851,398.20
  4. Step 4: Simplify right side
    6,642,969.40x = 18,448,172,384,722.62
  5. Step 5: Solve for x
    x = 18,448,172,384,722.62/6,642,969.40
  6. Step 6: Final answer
    x = 2,777,097.30

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Double scale
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Similar ratio
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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.