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Finding the Fourth Proportional to 662,912.40, 992,813.40 and 451,405.20

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Solution

The fourth proportional to 662,912.40, 992,813.40 and 451,405.20 is: 676,048.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,912.40 : 992,813.40 = 451,405.20 : x
  2. Step 2: Convert to fraction form
    662,912.40/992,813.40 = 451,405.20/x
  3. Step 3: Cross multiply
    662,912.40x = 992,813.40 × 451,405.20
  4. Step 4: Simplify right side
    662,912.40x = 448,161,131,389.68
  5. Step 5: Solve for x
    x = 448,161,131,389.68/662,912.40
  6. Step 6: Final answer
    x = 676,048.80

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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.