Home / 1,279,403.01-1,919,768.72-521,800.29

Finding the Fourth Proportional to 1,279,403.01, 1,919,768.72 and 521,800.29

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Solution

The fourth proportional to 1,279,403.01, 1,919,768.72 and 521,800.29 is: 782,971.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,403.01 : 1,919,768.72 = 521,800.29 : x
  2. Step 2: Convert to fraction form
    1,279,403.01/1,919,768.72 = 521,800.29/x
  3. Step 3: Cross multiply
    1,279,403.01x = 1,919,768.72 × 521,800.29
  4. Step 4: Simplify right side
    1,279,403.01x = 1,001,735,872,219.93
  5. Step 5: Solve for x
    x = 1,001,735,872,219.93/1,279,403.01
  6. Step 6: Final answer
    x = 782,971.33

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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.