Home / 755,040.90-1,129,608.90-489,320.40

Finding the Fourth Proportional to 755,040.90, 1,129,608.90 and 489,320.40

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Solution

The fourth proportional to 755,040.90, 1,129,608.90 and 489,320.40 is: 732,067.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,040.90 : 1,129,608.90 = 489,320.40 : x
  2. Step 2: Convert to fraction form
    755,040.90/1,129,608.90 = 489,320.40/x
  3. Step 3: Cross multiply
    755,040.90x = 1,129,608.90 × 489,320.40
  4. Step 4: Simplify right side
    755,040.90x = 552,740,678,791.56
  5. Step 5: Solve for x
    x = 552,740,678,791.56/755,040.90
  6. Step 6: Final answer
    x = 732,067.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.