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Finding the Fourth Proportional to 648,213.78, 894,533.58 and 361,716.78

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Solution

The fourth proportional to 648,213.78, 894,533.58 and 361,716.78 is: 499,168.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,213.78 : 894,533.58 = 361,716.78 : x
  2. Step 2: Convert to fraction form
    648,213.78/894,533.58 = 361,716.78/x
  3. Step 3: Cross multiply
    648,213.78x = 894,533.58 × 361,716.78
  4. Step 4: Simplify right side
    648,213.78x = 323,567,806,159.47
  5. Step 5: Solve for x
    x = 323,567,806,159.47/648,213.78
  6. Step 6: Final answer
    x = 499,168.35

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1.5x scale

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.