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Finding the Fourth Proportional to 684,888.77, 945,063.69 and 394,595.30

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Solution

The fourth proportional to 684,888.77, 945,063.69 and 394,595.30 is: 544,493.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,888.77 : 945,063.69 = 394,595.30 : x
  2. Step 2: Convert to fraction form
    684,888.77/945,063.69 = 394,595.30/x
  3. Step 3: Cross multiply
    684,888.77x = 945,063.69 × 394,595.30
  4. Step 4: Simplify right side
    684,888.77x = 372,917,690,274.66
  5. Step 5: Solve for x
    x = 372,917,690,274.66/684,888.77
  6. Step 6: Final answer
    x = 544,493.80

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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.