Home / 821,139.59-1,133,161.27-477,169.92

Finding the Fourth Proportional to 821,139.59, 1,133,161.27 and 477,169.92

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Solution

The fourth proportional to 821,139.59, 1,133,161.27 and 477,169.92 is: 658,487.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,139.59 : 1,133,161.27 = 477,169.92 : x
  2. Step 2: Convert to fraction form
    821,139.59/1,133,161.27 = 477,169.92/x
  3. Step 3: Cross multiply
    821,139.59x = 1,133,161.27 × 477,169.92
  4. Step 4: Simplify right side
    821,139.59x = 540,710,471,360.07
  5. Step 5: Solve for x
    x = 540,710,471,360.07/821,139.59
  6. Step 6: Final answer
    x = 658,487.88

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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.