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Finding the Fourth Proportional to 472,621.88, 651,993.08 and 319,713.60

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Solution

The fourth proportional to 472,621.88, 651,993.08 and 319,713.60 is: 441,052.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,621.88 : 651,993.08 = 319,713.60 : x
  2. Step 2: Convert to fraction form
    472,621.88/651,993.08 = 319,713.60/x
  3. Step 3: Cross multiply
    472,621.88x = 651,993.08 × 319,713.60
  4. Step 4: Simplify right side
    472,621.88x = 208,451,054,781.89
  5. Step 5: Solve for x
    x = 208,451,054,781.89/472,621.88
  6. Step 6: Final answer
    x = 441,052.49

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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.