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Finding the Fourth Proportional to 707,121.91, 975,809.53 and 384,825.09

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Solution

The fourth proportional to 707,121.91, 975,809.53 and 384,825.09 is: 531,048.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,121.91 : 975,809.53 = 384,825.09 : x
  2. Step 2: Convert to fraction form
    707,121.91/975,809.53 = 384,825.09/x
  3. Step 3: Cross multiply
    707,121.91x = 975,809.53 × 384,825.09
  4. Step 4: Simplify right side
    707,121.91x = 375,515,990,205.11
  5. Step 5: Solve for x
    x = 375,515,990,205.11/707,121.91
  6. Step 6: Final answer
    x = 531,048.44

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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.