Home / 739,959.78-1,021,144.50-400,428.03

Finding the Fourth Proportional to 739,959.78, 1,021,144.50 and 400,428.03

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Solution

The fourth proportional to 739,959.78, 1,021,144.50 and 400,428.03 is: 552,590.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,959.78 : 1,021,144.50 = 400,428.03 : x
  2. Step 2: Convert to fraction form
    739,959.78/1,021,144.50 = 400,428.03/x
  3. Step 3: Cross multiply
    739,959.78x = 1,021,144.50 × 400,428.03
  4. Step 4: Simplify right side
    739,959.78x = 408,894,883,033.20
  5. Step 5: Solve for x
    x = 408,894,883,033.20/739,959.78
  6. Step 6: Final answer
    x = 552,590.68

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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.