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Finding the Fourth Proportional to 667,661.45, 1,000,351.17 and 477,148.47

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Solution

The fourth proportional to 667,661.45, 1,000,351.17 and 477,148.47 is: 714,907.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,661.45 : 1,000,351.17 = 477,148.47 : x
  2. Step 2: Convert to fraction form
    667,661.45/1,000,351.17 = 477,148.47/x
  3. Step 3: Cross multiply
    667,661.45x = 1,000,351.17 × 477,148.47
  4. Step 4: Simplify right side
    667,661.45x = 477,316,025,226.45
  5. Step 5: Solve for x
    x = 477,316,025,226.45/667,661.45
  6. Step 6: Final answer
    x = 714,907.28

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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.