Home / 1,372,947.40-2,059,809.90-426,413.80

Finding the Fourth Proportional to 1,372,947.40, 2,059,809.90 and 426,413.80

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Solution

The fourth proportional to 1,372,947.40, 2,059,809.90 and 426,413.80 is: 639,741.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372,947.40 : 2,059,809.90 = 426,413.80 : x
  2. Step 2: Convert to fraction form
    1,372,947.40/2,059,809.90 = 426,413.80/x
  3. Step 3: Cross multiply
    1,372,947.40x = 2,059,809.90 × 426,413.80
  4. Step 4: Simplify right side
    1,372,947.40x = 878,331,366,736.62
  5. Step 5: Solve for x
    x = 878,331,366,736.62/1,372,947.40
  6. Step 6: Final answer
    x = 639,741.45

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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.