Home / 811,641.47-1,217,628.25-279,093.30

Finding the Fourth Proportional to 811,641.47, 1,217,628.25 and 279,093.30

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Solution

The fourth proportional to 811,641.47, 1,217,628.25 and 279,093.30 is: 418,697.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,641.47 : 1,217,628.25 = 279,093.30 : x
  2. Step 2: Convert to fraction form
    811,641.47/1,217,628.25 = 279,093.30/x
  3. Step 3: Cross multiply
    811,641.47x = 1,217,628.25 × 279,093.30
  4. Step 4: Simplify right side
    811,641.47x = 339,831,881,201.89
  5. Step 5: Solve for x
    x = 339,831,881,201.89/811,641.47
  6. Step 6: Final answer
    x = 418,697.04

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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.