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Finding the Fourth Proportional to 648,605.20, 972,907.80 and 449,150.80

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Solution

The fourth proportional to 648,605.20, 972,907.80 and 449,150.80 is: 673,726.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,605.20 : 972,907.80 = 449,150.80 : x
  2. Step 2: Convert to fraction form
    648,605.20/972,907.80 = 449,150.80/x
  3. Step 3: Cross multiply
    648,605.20x = 972,907.80 × 449,150.80
  4. Step 4: Simplify right side
    648,605.20x = 436,982,316,696.24
  5. Step 5: Solve for x
    x = 436,982,316,696.24/648,605.20
  6. Step 6: Final answer
    x = 673,726.20

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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.