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Finding the Fourth Proportional to 992,620.80, 1,489,546.80 and 519,645.60

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Solution

The fourth proportional to 992,620.80, 1,489,546.80 and 519,645.60 is: 779,790.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,620.80 : 1,489,546.80 = 519,645.60 : x
  2. Step 2: Convert to fraction form
    992,620.80/1,489,546.80 = 519,645.60/x
  3. Step 3: Cross multiply
    992,620.80x = 1,489,546.80 × 519,645.60
  4. Step 4: Simplify right side
    992,620.80x = 774,036,440,614.08
  5. Step 5: Solve for x
    x = 774,036,440,614.08/992,620.80
  6. Step 6: Final answer
    x = 779,790.67

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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.