Home / 1,005,073.95-1,387,325.30-643,471.73

Finding the Fourth Proportional to 1,005,073.95, 1,387,325.30 and 643,471.73

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Solution

The fourth proportional to 1,005,073.95, 1,387,325.30 and 643,471.73 is: 888,197.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,073.95 : 1,387,325.30 = 643,471.73 : x
  2. Step 2: Convert to fraction form
    1,005,073.95/1,387,325.30 = 643,471.73/x
  3. Step 3: Cross multiply
    1,005,073.95x = 1,387,325.30 × 643,471.73
  4. Step 4: Simplify right side
    1,005,073.95x = 892,704,600,709.78
  5. Step 5: Solve for x
    x = 892,704,600,709.78/1,005,073.95
  6. Step 6: Final answer
    x = 888,197.93

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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.