Home / 739,974-1,021,171.50-400,449.54

Finding the Fourth Proportional to 739,974, 1,021,171.50 and 400,449.54

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Solution

The fourth proportional to 739,974, 1,021,171.50 and 400,449.54 is: 552,624.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,974 : 1,021,171.50 = 400,449.54 : x
  2. Step 2: Convert to fraction form
    739,974/1,021,171.50 = 400,449.54/x
  3. Step 3: Cross multiply
    739,974x = 1,021,171.50 × 400,449.54
  4. Step 4: Simplify right side
    739,974x = 408,927,657,436.11
  5. Step 5: Solve for x
    x = 408,927,657,436.11/739,974
  6. Step 6: Final answer
    x = 552,624.36

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1.5x scale

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.