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Finding the Fourth Proportional to 623,792.62, 860,832.78 and 351,859.66

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Solution

The fourth proportional to 623,792.62, 860,832.78 and 351,859.66 is: 485,565.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,792.62 : 860,832.78 = 351,859.66 : x
  2. Step 2: Convert to fraction form
    623,792.62/860,832.78 = 351,859.66/x
  3. Step 3: Cross multiply
    623,792.62x = 860,832.78 × 351,859.66
  4. Step 4: Simplify right side
    623,792.62x = 302,892,329,287.66
  5. Step 5: Solve for x
    x = 302,892,329,287.66/623,792.62
  6. Step 6: Final answer
    x = 485,565.75

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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.