Home / 1,086,808.60-1,631,441.70-643,826.20

Finding the Fourth Proportional to 1,086,808.60, 1,631,441.70 and 643,826.20

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Solution

The fourth proportional to 1,086,808.60, 1,631,441.70 and 643,826.20 is: 966,467.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,808.60 : 1,631,441.70 = 643,826.20 : x
  2. Step 2: Convert to fraction form
    1,086,808.60/1,631,441.70 = 643,826.20/x
  3. Step 3: Cross multiply
    1,086,808.60x = 1,631,441.70 × 643,826.20
  4. Step 4: Simplify right side
    1,086,808.60x = 1,050,364,910,232.54
  5. Step 5: Solve for x
    x = 1,050,364,910,232.54/1,086,808.60
  6. Step 6: Final answer
    x = 966,467.24

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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.