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Finding the Fourth Proportional to 648,240.99, 894,657.20 and 361,820.54

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Solution

The fourth proportional to 648,240.99, 894,657.20 and 361,820.54 is: 499,359.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,240.99 : 894,657.20 = 361,820.54 : x
  2. Step 2: Convert to fraction form
    648,240.99/894,657.20 = 361,820.54/x
  3. Step 3: Cross multiply
    648,240.99x = 894,657.20 × 361,820.54
  4. Step 4: Simplify right side
    648,240.99x = 323,705,344,936.50
  5. Step 5: Solve for x
    x = 323,705,344,936.50/648,240.99
  6. Step 6: Final answer
    x = 499,359.57

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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.