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Finding the Fourth Proportional to 441,531.28, 665,247.04 and 399,464.74

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Solution

The fourth proportional to 441,531.28, 665,247.04 and 399,464.74 is: 601,866.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,531.28 : 665,247.04 = 399,464.74 : x
  2. Step 2: Convert to fraction form
    441,531.28/665,247.04 = 399,464.74/x
  3. Step 3: Cross multiply
    441,531.28x = 665,247.04 × 399,464.74
  4. Step 4: Simplify right side
    441,531.28x = 265,742,735,869.37
  5. Step 5: Solve for x
    x = 265,742,735,869.37/441,531.28
  6. Step 6: Final answer
    x = 601,866.16

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.