Home / 1,285,043.32-1,927,660.56-386,413.12

Finding the Fourth Proportional to 1,285,043.32, 1,927,660.56 and 386,413.12

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Solution

The fourth proportional to 1,285,043.32, 1,927,660.56 and 386,413.12 is: 579,648.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,043.32 : 1,927,660.56 = 386,413.12 : x
  2. Step 2: Convert to fraction form
    1,285,043.32/1,927,660.56 = 386,413.12/x
  3. Step 3: Cross multiply
    1,285,043.32x = 1,927,660.56 × 386,413.12
  4. Step 4: Simplify right side
    1,285,043.32x = 744,873,331,290.55
  5. Step 5: Solve for x
    x = 744,873,331,290.55/1,285,043.32
  6. Step 6: Final answer
    x = 579,648.42

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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.