Home / 1,278,413.37-1,917,121.91-479,259

Finding the Fourth Proportional to 1,278,413.37, 1,917,121.91 and 479,259

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Solution

The fourth proportional to 1,278,413.37, 1,917,121.91 and 479,259 is: 718,701.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,413.37 : 1,917,121.91 = 479,259 : x
  2. Step 2: Convert to fraction form
    1,278,413.37/1,917,121.91 = 479,259/x
  3. Step 3: Cross multiply
    1,278,413.37x = 1,917,121.91 × 479,259
  4. Step 4: Simplify right side
    1,278,413.37x = 918,797,927,068.40
  5. Step 5: Solve for x
    x = 918,797,927,068.40/1,278,413.37
  6. Step 6: Final answer
    x = 718,701.75

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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.