Home / 739,734-1,020,840.30-400,209.54

Finding the Fourth Proportional to 739,734, 1,020,840.30 and 400,209.54

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Solution

The fourth proportional to 739,734, 1,020,840.30 and 400,209.54 is: 552,293.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,734 : 1,020,840.30 = 400,209.54 : x
  2. Step 2: Convert to fraction form
    739,734/1,020,840.30 = 400,209.54/x
  3. Step 3: Cross multiply
    739,734x = 1,020,840.30 × 400,209.54
  4. Step 4: Simplify right side
    739,734x = 408,550,026,876.46
  5. Step 5: Solve for x
    x = 408,550,026,876.46/739,734
  6. Step 6: Final answer
    x = 552,293.16

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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.