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Finding the Fourth Proportional to 478,311.39, 660,044.79 and 297,019.44

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Solution

The fourth proportional to 478,311.39, 660,044.79 and 297,019.44 is: 409,871.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,311.39 : 660,044.79 = 297,019.44 : x
  2. Step 2: Convert to fraction form
    478,311.39/660,044.79 = 297,019.44/x
  3. Step 3: Cross multiply
    478,311.39x = 660,044.79 × 297,019.44
  4. Step 4: Simplify right side
    478,311.39x = 196,046,133,900.72
  5. Step 5: Solve for x
    x = 196,046,133,900.72/478,311.39
  6. Step 6: Final answer
    x = 409,871.35

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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.