Home / 1,286,728.80-1,930,561.20-445,365.60

Finding the Fourth Proportional to 1,286,728.80, 1,930,561.20 and 445,365.60

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Solution

The fourth proportional to 1,286,728.80, 1,930,561.20 and 445,365.60 is: 668,210.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,728.80 : 1,930,561.20 = 445,365.60 : x
  2. Step 2: Convert to fraction form
    1,286,728.80/1,930,561.20 = 445,365.60/x
  3. Step 3: Cross multiply
    1,286,728.80x = 1,930,561.20 × 445,365.60
  4. Step 4: Simplify right side
    1,286,728.80x = 859,805,547,174.72
  5. Step 5: Solve for x
    x = 859,805,547,174.72/1,286,728.80
  6. Step 6: Final answer
    x = 668,210.39

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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.