Home / 1,915,151.31-2,873,412.90-820,476.81

Finding the Fourth Proportional to 1,915,151.31, 2,873,412.90 and 820,476.81

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Solution

The fourth proportional to 1,915,151.31, 2,873,412.90 and 820,476.81 is: 1,231,009.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915,151.31 : 2,873,412.90 = 820,476.81 : x
  2. Step 2: Convert to fraction form
    1,915,151.31/2,873,412.90 = 820,476.81/x
  3. Step 3: Cross multiply
    1,915,151.31x = 2,873,412.90 × 820,476.81
  4. Step 4: Simplify right side
    1,915,151.31x = 2,357,568,650,004.85
  5. Step 5: Solve for x
    x = 2,357,568,650,004.85/1,915,151.31
  6. Step 6: Final answer
    x = 1,231,009.08

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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.