Home / 1,279,413.23-1,919,784.02-521,810.51

Finding the Fourth Proportional to 1,279,413.23, 1,919,784.02 and 521,810.51

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Solution

The fourth proportional to 1,279,413.23, 1,919,784.02 and 521,810.51 is: 782,986.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,413.23 : 1,919,784.02 = 521,810.51 : x
  2. Step 2: Convert to fraction form
    1,279,413.23/1,919,784.02 = 521,810.51/x
  3. Step 3: Cross multiply
    1,279,413.23x = 1,919,784.02 × 521,810.51
  4. Step 4: Simplify right side
    1,279,413.23x = 1,001,763,466,358.08
  5. Step 5: Solve for x
    x = 1,001,763,466,358.08/1,279,413.23
  6. Step 6: Final answer
    x = 782,986.64

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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.