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Finding the Fourth Proportional to 648,275.72, 894,665.40 and 361,851.80

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Solution

The fourth proportional to 648,275.72, 894,665.40 and 361,851.80 is: 499,380.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,275.72 : 894,665.40 = 361,851.80 : x
  2. Step 2: Convert to fraction form
    648,275.72/894,665.40 = 361,851.80/x
  3. Step 3: Cross multiply
    648,275.72x = 894,665.40 × 361,851.80
  4. Step 4: Simplify right side
    648,275.72x = 323,736,285,387.72
  5. Step 5: Solve for x
    x = 323,736,285,387.72/648,275.72
  6. Step 6: Final answer
    x = 499,380.55

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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.