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Finding the Fourth Proportional to 648,213.55, 894,427.72 and 361,732.95

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Solution

The fourth proportional to 648,213.55, 894,427.72 and 361,732.95 is: 499,131.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,213.55 : 894,427.72 = 361,732.95 : x
  2. Step 2: Convert to fraction form
    648,213.55/894,427.72 = 361,732.95/x
  3. Step 3: Cross multiply
    648,213.55x = 894,427.72 × 361,732.95
  4. Step 4: Simplify right side
    648,213.55x = 323,543,976,813.04
  5. Step 5: Solve for x
    x = 323,543,976,813.04/648,213.55
  6. Step 6: Final answer
    x = 499,131.77

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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.