Home / 1,138,754.40-1,571,413.52-629,426.40

Finding the Fourth Proportional to 1,138,754.40, 1,571,413.52 and 629,426.40

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Solution

The fourth proportional to 1,138,754.40, 1,571,413.52 and 629,426.40 is: 868,571.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,754.40 : 1,571,413.52 = 629,426.40 : x
  2. Step 2: Convert to fraction form
    1,138,754.40/1,571,413.52 = 629,426.40/x
  3. Step 3: Cross multiply
    1,138,754.40x = 1,571,413.52 × 629,426.40
  4. Step 4: Simplify right side
    1,138,754.40x = 989,089,154,804.93
  5. Step 5: Solve for x
    x = 989,089,154,804.93/1,138,754.40
  6. Step 6: Final answer
    x = 868,571.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.