Home / 872,824.80-1,309,820.40-399,266.40

Finding the Fourth Proportional to 872,824.80, 1,309,820.40 and 399,266.40

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Solution

The fourth proportional to 872,824.80, 1,309,820.40 and 399,266.40 is: 599,166.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,824.80 : 1,309,820.40 = 399,266.40 : x
  2. Step 2: Convert to fraction form
    872,824.80/1,309,820.40 = 399,266.40/x
  3. Step 3: Cross multiply
    872,824.80x = 1,309,820.40 × 399,266.40
  4. Step 4: Simplify right side
    872,824.80x = 522,967,275,754.56
  5. Step 5: Solve for x
    x = 522,967,275,754.56/872,824.80
  6. Step 6: Final answer
    x = 599,166.38

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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.