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Finding the Fourth Proportional to 709,610.64, 979,254.64 and 403,679.84

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Solution

The fourth proportional to 709,610.64, 979,254.64 and 403,679.84 is: 557,073.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,610.64 : 979,254.64 = 403,679.84 : x
  2. Step 2: Convert to fraction form
    709,610.64/979,254.64 = 403,679.84/x
  3. Step 3: Cross multiply
    709,610.64x = 979,254.64 × 403,679.84
  4. Step 4: Simplify right side
    709,610.64x = 395,305,356,394.46
  5. Step 5: Solve for x
    x = 395,305,356,394.46/709,610.64
  6. Step 6: Final answer
    x = 557,073.60

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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.