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Finding the Fourth Proportional to 666,096, 919,213.20 and 364,290.72

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Solution

The fourth proportional to 666,096, 919,213.20 and 364,290.72 is: 502,721.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,096 : 919,213.20 = 364,290.72 : x
  2. Step 2: Convert to fraction form
    666,096/919,213.20 = 364,290.72/x
  3. Step 3: Cross multiply
    666,096x = 919,213.20 × 364,290.72
  4. Step 4: Simplify right side
    666,096x = 334,860,838,461.50
  5. Step 5: Solve for x
    x = 334,860,838,461.50/666,096
  6. Step 6: Final answer
    x = 502,721.59

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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.