Home / 820,315.28-1,131,866.08-471,388.28

Finding the Fourth Proportional to 820,315.28, 1,131,866.08 and 471,388.28

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Solution

The fourth proportional to 820,315.28, 1,131,866.08 and 471,388.28 is: 650,418.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,315.28 : 1,131,866.08 = 471,388.28 : x
  2. Step 2: Convert to fraction form
    820,315.28/1,131,866.08 = 471,388.28/x
  3. Step 3: Cross multiply
    820,315.28x = 1,131,866.08 × 471,388.28
  4. Step 4: Simplify right side
    820,315.28x = 533,548,404,641.54
  5. Step 5: Solve for x
    x = 533,548,404,641.54/820,315.28
  6. Step 6: Final answer
    x = 650,418.71

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1.5x scale

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.