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Finding the Fourth Proportional to 648,278.72, 894,669.54 and 361,854.80

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Solution

The fourth proportional to 648,278.72, 894,669.54 and 361,854.80 is: 499,384.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,278.72 : 894,669.54 = 361,854.80 : x
  2. Step 2: Convert to fraction form
    648,278.72/894,669.54 = 361,854.80/x
  3. Step 3: Cross multiply
    648,278.72x = 894,669.54 × 361,854.80
  4. Step 4: Simplify right side
    648,278.72x = 323,740,467,462.79
  5. Step 5: Solve for x
    x = 323,740,467,462.79/648,278.72
  6. Step 6: Final answer
    x = 499,384.69

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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.