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Finding the Fourth Proportional to 557,934.48, 768,647.88 and 387,873.36

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Solution

The fourth proportional to 557,934.48, 768,647.88 and 387,873.36 is: 534,360.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,934.48 : 768,647.88 = 387,873.36 : x
  2. Step 2: Convert to fraction form
    557,934.48/768,647.88 = 387,873.36/x
  3. Step 3: Cross multiply
    557,934.48x = 768,647.88 × 387,873.36
  4. Step 4: Simplify right side
    557,934.48x = 298,138,035,872.48
  5. Step 5: Solve for x
    x = 298,138,035,872.48/557,934.48
  6. Step 6: Final answer
    x = 534,360.30

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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.