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Finding the Fourth Proportional to 449,594.31, 620,432.81 and 245,640.85

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Solution

The fourth proportional to 449,594.31, 620,432.81 and 245,640.85 is: 338,980.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,594.31 : 620,432.81 = 245,640.85 : x
  2. Step 2: Convert to fraction form
    449,594.31/620,432.81 = 245,640.85/x
  3. Step 3: Cross multiply
    449,594.31x = 620,432.81 × 245,640.85
  4. Step 4: Simplify right side
    449,594.31x = 152,403,640,328.23
  5. Step 5: Solve for x
    x = 152,403,640,328.23/449,594.31
  6. Step 6: Final answer
    x = 338,980.36

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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.