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Finding the Fourth Proportional to 665,774.88, 918,703.32 and 379,277.88

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Solution

The fourth proportional to 665,774.88, 918,703.32 and 379,277.88 is: 523,365.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,774.88 : 918,703.32 = 379,277.88 : x
  2. Step 2: Convert to fraction form
    665,774.88/918,703.32 = 379,277.88/x
  3. Step 3: Cross multiply
    665,774.88x = 918,703.32 × 379,277.88
  4. Step 4: Simplify right side
    665,774.88x = 348,443,847,558.56
  5. Step 5: Solve for x
    x = 348,443,847,558.56/665,774.88
  6. Step 6: Final answer
    x = 523,365.87

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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.