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Finding the Fourth Proportional to 694,892.15, 958,967.40 and 388,960.92

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Solution

The fourth proportional to 694,892.15, 958,967.40 and 388,960.92 is: 536,775.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,892.15 : 958,967.40 = 388,960.92 : x
  2. Step 2: Convert to fraction form
    694,892.15/958,967.40 = 388,960.92/x
  3. Step 3: Cross multiply
    694,892.15x = 958,967.40 × 388,960.92
  4. Step 4: Simplify right side
    694,892.15x = 373,000,843,612.61
  5. Step 5: Solve for x
    x = 373,000,843,612.61/694,892.15
  6. Step 6: Final answer
    x = 536,775.16

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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.