Home / 709,745.13-979,452.26-403,821.50

Finding the Fourth Proportional to 709,745.13, 979,452.26 and 403,821.50

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Solution

The fourth proportional to 709,745.13, 979,452.26 and 403,821.50 is: 557,275.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,745.13 : 979,452.26 = 403,821.50 : x
  2. Step 2: Convert to fraction form
    709,745.13/979,452.26 = 403,821.50/x
  3. Step 3: Cross multiply
    709,745.13x = 979,452.26 × 403,821.50
  4. Step 4: Simplify right side
    709,745.13x = 395,523,878,792.48
  5. Step 5: Solve for x
    x = 395,523,878,792.48/709,745.13
  6. Step 6: Final answer
    x = 557,275.93

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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.