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Finding the Fourth Proportional to 629,490.84, 868,670.16 and 357,557.88

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Solution

The fourth proportional to 629,490.84, 868,670.16 and 357,557.88 is: 493,414.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,490.84 : 868,670.16 = 357,557.88 : x
  2. Step 2: Convert to fraction form
    629,490.84/868,670.16 = 357,557.88/x
  3. Step 3: Cross multiply
    629,490.84x = 868,670.16 × 357,557.88
  4. Step 4: Simplify right side
    629,490.84x = 310,599,860,828.86
  5. Step 5: Solve for x
    x = 310,599,860,828.86/629,490.84
  6. Step 6: Final answer
    x = 493,414.42

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1.5x scale

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.