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Finding the Fourth Proportional to 664,251.84, 996,909.12 and 348,894.72

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Solution

The fourth proportional to 664,251.84, 996,909.12 and 348,894.72 is: 523,621.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,251.84 : 996,909.12 = 348,894.72 : x
  2. Step 2: Convert to fraction form
    664,251.84/996,909.12 = 348,894.72/x
  3. Step 3: Cross multiply
    664,251.84x = 996,909.12 × 348,894.72
  4. Step 4: Simplify right side
    664,251.84x = 347,816,328,287.85
  5. Step 5: Solve for x
    x = 347,816,328,287.85/664,251.84
  6. Step 6: Final answer
    x = 523,621.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.