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Finding the Fourth Proportional to 978,025.51, 1,466,913.66 and 378,576.55

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Solution

The fourth proportional to 978,025.51, 1,466,913.66 and 378,576.55 is: 567,816.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,025.51 : 1,466,913.66 = 378,576.55 : x
  2. Step 2: Convert to fraction form
    978,025.51/1,466,913.66 = 378,576.55/x
  3. Step 3: Cross multiply
    978,025.51x = 1,466,913.66 × 378,576.55
  4. Step 4: Simplify right side
    978,025.51x = 555,339,112,550.67
  5. Step 5: Solve for x
    x = 555,339,112,550.67/978,025.51
  6. Step 6: Final answer
    x = 567,816.59

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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.