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Finding the Fourth Proportional to 449,440.92, 620,224.78 and 245,492

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Solution

The fourth proportional to 449,440.92, 620,224.78 and 245,492 is: 338,776.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,440.92 : 620,224.78 = 245,492 : x
  2. Step 2: Convert to fraction form
    449,440.92/620,224.78 = 245,492/x
  3. Step 3: Cross multiply
    449,440.92x = 620,224.78 × 245,492
  4. Step 4: Simplify right side
    449,440.92x = 152,260,221,691.76
  5. Step 5: Solve for x
    x = 152,260,221,691.76/449,440.92
  6. Step 6: Final answer
    x = 338,776.94

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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.