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Finding the Fourth Proportional to 484,891.20, 727,336.80 and 316,929.60

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Solution

The fourth proportional to 484,891.20, 727,336.80 and 316,929.60 is: 475,394.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,891.20 : 727,336.80 = 316,929.60 : x
  2. Step 2: Convert to fraction form
    484,891.20/727,336.80 = 316,929.60/x
  3. Step 3: Cross multiply
    484,891.20x = 727,336.80 × 316,929.60
  4. Step 4: Simplify right side
    484,891.20x = 230,514,561,089.28
  5. Step 5: Solve for x
    x = 230,514,561,089.28/484,891.20
  6. Step 6: Final answer
    x = 475,394.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.