Home / 1,928,888.62-2,887,657.20-1,287,601.78

Finding the Fourth Proportional to 1,928,888.62, 2,887,657.20 and 1,287,601.78

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Solution

The fourth proportional to 1,928,888.62, 2,887,657.20 and 1,287,601.78 is: 1,927,613.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928,888.62 : 2,887,657.20 = 1,287,601.78 : x
  2. Step 2: Convert to fraction form
    1,928,888.62/2,887,657.20 = 1,287,601.78/x
  3. Step 3: Cross multiply
    1,928,888.62x = 2,887,657.20 × 1,287,601.78
  4. Step 4: Simplify right side
    1,928,888.62x = 3,718,152,550,749.82
  5. Step 5: Solve for x
    x = 3,718,152,550,749.82/1,928,888.62
  6. Step 6: Final answer
    x = 1,927,613.92

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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.