Home / 1,555,009.30-2,332,513.95-1,289,288.80

Finding the Fourth Proportional to 1,555,009.30, 2,332,513.95 and 1,289,288.80

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Solution

The fourth proportional to 1,555,009.30, 2,332,513.95 and 1,289,288.80 is: 1,933,933.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555,009.30 : 2,332,513.95 = 1,289,288.80 : x
  2. Step 2: Convert to fraction form
    1,555,009.30/2,332,513.95 = 1,289,288.80/x
  3. Step 3: Cross multiply
    1,555,009.30x = 2,332,513.95 × 1,289,288.80
  4. Step 4: Simplify right side
    1,555,009.30x = 3,007,284,111,578.76
  5. Step 5: Solve for x
    x = 3,007,284,111,578.76/1,555,009.30
  6. Step 6: Final answer
    x = 1,933,933.20

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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.