Home / 1,915,218.72-2,643,020.28-1,055,809.80

Finding the Fourth Proportional to 1,915,218.72, 2,643,020.28 and 1,055,809.80

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Solution

The fourth proportional to 1,915,218.72, 2,643,020.28 and 1,055,809.80 is: 1,457,027.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915,218.72 : 2,643,020.28 = 1,055,809.80 : x
  2. Step 2: Convert to fraction form
    1,915,218.72/2,643,020.28 = 1,055,809.80/x
  3. Step 3: Cross multiply
    1,915,218.72x = 2,643,020.28 × 1,055,809.80
  4. Step 4: Simplify right side
    1,915,218.72x = 2,790,526,713,222.74
  5. Step 5: Solve for x
    x = 2,790,526,713,222.74/1,915,218.72
  6. Step 6: Final answer
    x = 1,457,027.69

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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.