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Finding the Fourth Proportional to 663,436.04, 915,573.65 and 373,138.52

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Solution

The fourth proportional to 663,436.04, 915,573.65 and 373,138.52 is: 514,949.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,436.04 : 915,573.65 = 373,138.52 : x
  2. Step 2: Convert to fraction form
    663,436.04/915,573.65 = 373,138.52/x
  3. Step 3: Cross multiply
    663,436.04x = 915,573.65 × 373,138.52
  4. Step 4: Simplify right side
    663,436.04x = 341,635,790,268.44
  5. Step 5: Solve for x
    x = 341,635,790,268.44/663,436.04
  6. Step 6: Final answer
    x = 514,949.10

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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.