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Finding the Fourth Proportional to 476,860.72, 658,356.81 and 315,853.78

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Solution

The fourth proportional to 476,860.72, 658,356.81 and 315,853.78 is: 436,069.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,860.72 : 658,356.81 = 315,853.78 : x
  2. Step 2: Convert to fraction form
    476,860.72/658,356.81 = 315,853.78/x
  3. Step 3: Cross multiply
    476,860.72x = 658,356.81 × 315,853.78
  4. Step 4: Simplify right side
    476,860.72x = 207,944,487,027.24
  5. Step 5: Solve for x
    x = 207,944,487,027.24/476,860.72
  6. Step 6: Final answer
    x = 436,069.65

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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.