Home / 1,621,557.43-2,430,436.29-661,413.80

Finding the Fourth Proportional to 1,621,557.43, 2,430,436.29 and 661,413.80

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Solution

The fourth proportional to 1,621,557.43, 2,430,436.29 and 661,413.80 is: 991,345.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621,557.43 : 2,430,436.29 = 661,413.80 : x
  2. Step 2: Convert to fraction form
    1,621,557.43/2,430,436.29 = 661,413.80/x
  3. Step 3: Cross multiply
    1,621,557.43x = 2,430,436.29 × 661,413.80
  4. Step 4: Simplify right side
    1,621,557.43x = 1,607,524,105,822.59
  5. Step 5: Solve for x
    x = 1,607,524,105,822.59/1,621,557.43
  6. Step 6: Final answer
    x = 991,345.78

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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.