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Finding the Fourth Proportional to 709,874.64, 979,712.94 and 404,025.42

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Solution

The fourth proportional to 709,874.64, 979,712.94 and 404,025.42 is: 557,603.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,874.64 : 979,712.94 = 404,025.42 : x
  2. Step 2: Convert to fraction form
    709,874.64/979,712.94 = 404,025.42/x
  3. Step 3: Cross multiply
    709,874.64x = 979,712.94 × 404,025.42
  4. Step 4: Simplify right side
    709,874.64x = 395,828,932,062.94
  5. Step 5: Solve for x
    x = 395,828,932,062.94/709,874.64
  6. Step 6: Final answer
    x = 557,603.99

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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.