Home / 739,958.78-1,021,143.12-400,427.03

Finding the Fourth Proportional to 739,958.78, 1,021,143.12 and 400,427.03

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Solution

The fourth proportional to 739,958.78, 1,021,143.12 and 400,427.03 is: 552,589.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,958.78 : 1,021,143.12 = 400,427.03 : x
  2. Step 2: Convert to fraction form
    739,958.78/1,021,143.12 = 400,427.03/x
  3. Step 3: Cross multiply
    739,958.78x = 1,021,143.12 × 400,427.03
  4. Step 4: Simplify right side
    739,958.78x = 408,893,306,746.53
  5. Step 5: Solve for x
    x = 408,893,306,746.53/739,958.78
  6. Step 6: Final answer
    x = 552,589.30

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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.