Home / 1,128,413.70-1,557,182.77-631,690.65

Finding the Fourth Proportional to 1,128,413.70, 1,557,182.77 and 631,690.65

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Solution

The fourth proportional to 1,128,413.70, 1,557,182.77 and 631,690.65 is: 871,717.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,413.70 : 1,557,182.77 = 631,690.65 : x
  2. Step 2: Convert to fraction form
    1,128,413.70/1,557,182.77 = 631,690.65/x
  3. Step 3: Cross multiply
    1,128,413.70x = 1,557,182.77 × 631,690.65
  4. Step 4: Simplify right side
    1,128,413.70x = 983,657,794,570.87
  5. Step 5: Solve for x
    x = 983,657,794,570.87/1,128,413.70
  6. Step 6: Final answer
    x = 871,717.34

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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.