Home / 709,869.52-979,641.56-403,989.90

Finding the Fourth Proportional to 709,869.52, 979,641.56 and 403,989.90

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Solution

The fourth proportional to 709,869.52, 979,641.56 and 403,989.90 is: 557,518.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,869.52 : 979,641.56 = 403,989.90 : x
  2. Step 2: Convert to fraction form
    709,869.52/979,641.56 = 403,989.90/x
  3. Step 3: Cross multiply
    709,869.52x = 979,641.56 × 403,989.90
  4. Step 4: Simplify right side
    709,869.52x = 395,765,295,860.24
  5. Step 5: Solve for x
    x = 395,765,295,860.24/709,869.52
  6. Step 6: Final answer
    x = 557,518.37

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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.