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Finding the Fourth Proportional to 808,079.56, 1,115,157.56 and 445,517.48

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Solution

The fourth proportional to 808,079.56, 1,115,157.56 and 445,517.48 is: 614,818.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,079.56 : 1,115,157.56 = 445,517.48 : x
  2. Step 2: Convert to fraction form
    808,079.56/1,115,157.56 = 445,517.48/x
  3. Step 3: Cross multiply
    808,079.56x = 1,115,157.56 × 445,517.48
  4. Step 4: Simplify right side
    808,079.56x = 496,822,185,934.15
  5. Step 5: Solve for x
    x = 496,822,185,934.15/808,079.56
  6. Step 6: Final answer
    x = 614,818.40

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1.5x scale

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.