Home / 1,426,774.20-1,968,905.78-782,172.36

Finding the Fourth Proportional to 1,426,774.20, 1,968,905.78 and 782,172.36

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Solution

The fourth proportional to 1,426,774.20, 1,968,905.78 and 782,172.36 is: 1,079,374.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426,774.20 : 1,968,905.78 = 782,172.36 : x
  2. Step 2: Convert to fraction form
    1,426,774.20/1,968,905.78 = 782,172.36/x
  3. Step 3: Cross multiply
    1,426,774.20x = 1,968,905.78 × 782,172.36
  4. Step 4: Simplify right side
    1,426,774.20x = 1,540,023,680,560.24
  5. Step 5: Solve for x
    x = 1,540,023,680,560.24/1,426,774.20
  6. Step 6: Final answer
    x = 1,079,374.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.