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Finding the Fourth Proportional to 821,374.64, 1,229,064.52 and 484,576.64

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Solution

The fourth proportional to 821,374.64, 1,229,064.52 and 484,576.64 is: 725,096.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,374.64 : 1,229,064.52 = 484,576.64 : x
  2. Step 2: Convert to fraction form
    821,374.64/1,229,064.52 = 484,576.64/x
  3. Step 3: Cross multiply
    821,374.64x = 1,229,064.52 × 484,576.64
  4. Step 4: Simplify right side
    821,374.64x = 595,575,955,444.81
  5. Step 5: Solve for x
    x = 595,575,955,444.81/821,374.64
  6. Step 6: Final answer
    x = 725,096.60

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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.