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Finding the Fourth Proportional to 693,181.95, 956,496.44 and 387,220.50

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Solution

The fourth proportional to 693,181.95, 956,496.44 and 387,220.50 is: 534,311.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,181.95 : 956,496.44 = 387,220.50 : x
  2. Step 2: Convert to fraction form
    693,181.95/956,496.44 = 387,220.50/x
  3. Step 3: Cross multiply
    693,181.95x = 956,496.44 × 387,220.50
  4. Step 4: Simplify right side
    693,181.95x = 370,375,027,808.92
  5. Step 5: Solve for x
    x = 370,375,027,808.92/693,181.95
  6. Step 6: Final answer
    x = 534,311.41

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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.