Home / 1,219,427.20-1,680,099.75-805,228.45

Finding the Fourth Proportional to 1,219,427.20, 1,680,099.75 and 805,228.45

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Solution

The fourth proportional to 1,219,427.20, 1,680,099.75 and 805,228.45 is: 1,109,425.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,427.20 : 1,680,099.75 = 805,228.45 : x
  2. Step 2: Convert to fraction form
    1,219,427.20/1,680,099.75 = 805,228.45/x
  3. Step 3: Cross multiply
    1,219,427.20x = 1,680,099.75 × 805,228.45
  4. Step 4: Simplify right side
    1,219,427.20x = 1,352,864,121,612.20
  5. Step 5: Solve for x
    x = 1,352,864,121,612.20/1,219,427.20
  6. Step 6: Final answer
    x = 1,109,425.90

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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.