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Finding the Fourth Proportional to 554,630.52, 765,390.15 and 299,981.64

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Solution

The fourth proportional to 554,630.52, 765,390.15 and 299,981.64 is: 413,974.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,630.52 : 765,390.15 = 299,981.64 : x
  2. Step 2: Convert to fraction form
    554,630.52/765,390.15 = 299,981.64/x
  3. Step 3: Cross multiply
    554,630.52x = 765,390.15 × 299,981.64
  4. Step 4: Simplify right side
    554,630.52x = 229,602,992,436.85
  5. Step 5: Solve for x
    x = 229,602,992,436.85/554,630.52
  6. Step 6: Final answer
    x = 413,974.68

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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.