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Finding the Fourth Proportional to 663,308.64, 915,368.96 and 376,844.44

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Solution

The fourth proportional to 663,308.64, 915,368.96 and 376,844.44 is: 520,047.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,308.64 : 915,368.96 = 376,844.44 : x
  2. Step 2: Convert to fraction form
    663,308.64/915,368.96 = 376,844.44/x
  3. Step 3: Cross multiply
    663,308.64x = 915,368.96 × 376,844.44
  4. Step 4: Simplify right side
    663,308.64x = 344,951,703,124.58
  5. Step 5: Solve for x
    x = 344,951,703,124.58/663,308.64
  6. Step 6: Final answer
    x = 520,047.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.