Home / 1,279,413.68-1,919,784.70-521,810.96

Finding the Fourth Proportional to 1,279,413.68, 1,919,784.70 and 521,810.96

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Solution

The fourth proportional to 1,279,413.68, 1,919,784.70 and 521,810.96 is: 782,987.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,413.68 : 1,919,784.70 = 521,810.96 : x
  2. Step 2: Convert to fraction form
    1,279,413.68/1,919,784.70 = 521,810.96/x
  3. Step 3: Cross multiply
    1,279,413.68x = 1,919,784.70 × 521,810.96
  4. Step 4: Simplify right side
    1,279,413.68x = 1,001,764,697,300.31
  5. Step 5: Solve for x
    x = 1,001,764,697,300.31/1,279,413.68
  6. Step 6: Final answer
    x = 782,987.33

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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.