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Finding the Fourth Proportional to 648,157.92, 894,503.12 and 361,682.76

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Solution

The fourth proportional to 648,157.92, 894,503.12 and 361,682.76 is: 499,147.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,157.92 : 894,503.12 = 361,682.76 : x
  2. Step 2: Convert to fraction form
    648,157.92/894,503.12 = 361,682.76/x
  3. Step 3: Cross multiply
    648,157.92x = 894,503.12 × 361,682.76
  4. Step 4: Simplify right side
    648,157.92x = 323,526,357,270.21
  5. Step 5: Solve for x
    x = 323,526,357,270.21/648,157.92
  6. Step 6: Final answer
    x = 499,147.43

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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.