Home / 821,273.02-1,231,099.89-288,420.40

Finding the Fourth Proportional to 821,273.02, 1,231,099.89 and 288,420.40

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Solution

The fourth proportional to 821,273.02, 1,231,099.89 and 288,420.40 is: 432,346.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,273.02 : 1,231,099.89 = 288,420.40 : x
  2. Step 2: Convert to fraction form
    821,273.02/1,231,099.89 = 288,420.40/x
  3. Step 3: Cross multiply
    821,273.02x = 1,231,099.89 × 288,420.40
  4. Step 4: Simplify right side
    821,273.02x = 355,074,322,713.76
  5. Step 5: Solve for x
    x = 355,074,322,713.76/821,273.02
  6. Step 6: Final answer
    x = 432,346.26

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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.