Home / 1,005,074.95-1,387,326.68-643,472.73

Finding the Fourth Proportional to 1,005,074.95, 1,387,326.68 and 643,472.73

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Solution

The fourth proportional to 1,005,074.95, 1,387,326.68 and 643,472.73 is: 888,199.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,074.95 : 1,387,326.68 = 643,472.73 : x
  2. Step 2: Convert to fraction form
    1,005,074.95/1,387,326.68 = 643,472.73/x
  3. Step 3: Cross multiply
    1,005,074.95x = 1,387,326.68 × 643,472.73
  4. Step 4: Simplify right side
    1,005,074.95x = 892,706,886,181.44
  5. Step 5: Solve for x
    x = 892,706,886,181.44/1,005,074.95
  6. Step 6: Final answer
    x = 888,199.32

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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.