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Finding the Fourth Proportional to 768,072.45, 1,059,687.05 and 496,300.44

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Solution

The fourth proportional to 768,072.45, 1,059,687.05 and 496,300.44 is: 684,731.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,072.45 : 1,059,687.05 = 496,300.44 : x
  2. Step 2: Convert to fraction form
    768,072.45/1,059,687.05 = 496,300.44/x
  3. Step 3: Cross multiply
    768,072.45x = 1,059,687.05 × 496,300.44
  4. Step 4: Simplify right side
    768,072.45x = 525,923,146,695.80
  5. Step 5: Solve for x
    x = 525,923,146,695.80/768,072.45
  6. Step 6: Final answer
    x = 684,731.17

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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.