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Finding the Fourth Proportional to 808,359.10, 1,115,520.03 and 445,816.47

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Solution

The fourth proportional to 808,359.10, 1,115,520.03 and 445,816.47 is: 615,218.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,359.10 : 1,115,520.03 = 445,816.47 : x
  2. Step 2: Convert to fraction form
    808,359.10/1,115,520.03 = 445,816.47/x
  3. Step 3: Cross multiply
    808,359.10x = 1,115,520.03 × 445,816.47
  4. Step 4: Simplify right side
    808,359.10x = 497,317,200,314.64
  5. Step 5: Solve for x
    x = 497,317,200,314.64/808,359.10
  6. Step 6: Final answer
    x = 615,218.16

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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.