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Finding the Fourth Proportional to 449,636.28, 620,490.56 and 245,682.74

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Solution

The fourth proportional to 449,636.28, 620,490.56 and 245,682.74 is: 339,038.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,636.28 : 620,490.56 = 245,682.74 : x
  2. Step 2: Convert to fraction form
    449,636.28/620,490.56 = 245,682.74/x
  3. Step 3: Cross multiply
    449,636.28x = 620,490.56 × 245,682.74
  4. Step 4: Simplify right side
    449,636.28x = 152,443,816,594.07
  5. Step 5: Solve for x
    x = 152,443,816,594.07/449,636.28
  6. Step 6: Final answer
    x = 339,038.07

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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.