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Finding the Fourth Proportional to 705,373.05, 973,382.28 and 399,442.44

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Solution

The fourth proportional to 705,373.05, 973,382.28 and 399,442.44 is: 551,212.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,373.05 : 973,382.28 = 399,442.44 : x
  2. Step 2: Convert to fraction form
    705,373.05/973,382.28 = 399,442.44/x
  3. Step 3: Cross multiply
    705,373.05x = 973,382.28 × 399,442.44
  4. Step 4: Simplify right side
    705,373.05x = 388,810,192,975.96
  5. Step 5: Solve for x
    x = 388,810,192,975.96/705,373.05
  6. Step 6: Final answer
    x = 551,212.15

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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.