Home / 1,338,390.60-2,009,141.10-806,512.20

Finding the Fourth Proportional to 1,338,390.60, 2,009,141.10 and 806,512.20

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Solution

The fourth proportional to 1,338,390.60, 2,009,141.10 and 806,512.20 is: 1,210,705.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,390.60 : 2,009,141.10 = 806,512.20 : x
  2. Step 2: Convert to fraction form
    1,338,390.60/2,009,141.10 = 806,512.20/x
  3. Step 3: Cross multiply
    1,338,390.60x = 2,009,141.10 × 806,512.20
  4. Step 4: Simplify right side
    1,338,390.60x = 1,620,396,808,671.42
  5. Step 5: Solve for x
    x = 1,620,396,808,671.42/1,338,390.60
  6. Step 6: Final answer
    x = 1,210,705.46

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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.