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Finding the Fourth Proportional to 666,505.56, 997,433.29 and 545,159.87

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Solution

The fourth proportional to 666,505.56, 997,433.29 and 545,159.87 is: 815,838.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,505.56 : 997,433.29 = 545,159.87 : x
  2. Step 2: Convert to fraction form
    666,505.56/997,433.29 = 545,159.87/x
  3. Step 3: Cross multiply
    666,505.56x = 997,433.29 × 545,159.87
  4. Step 4: Simplify right side
    666,505.56x = 543,760,602,144.73
  5. Step 5: Solve for x
    x = 543,760,602,144.73/666,505.56
  6. Step 6: Final answer
    x = 815,838.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.