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Finding the Fourth Proportional to 449,646.72, 620,637.60 and 258,721.62

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Solution

The fourth proportional to 449,646.72, 620,637.60 and 258,721.62 is: 357,107.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,646.72 : 620,637.60 = 258,721.62 : x
  2. Step 2: Convert to fraction form
    449,646.72/620,637.60 = 258,721.62/x
  3. Step 3: Cross multiply
    449,646.72x = 620,637.60 × 258,721.62
  4. Step 4: Simplify right side
    449,646.72x = 160,572,365,304.91
  5. Step 5: Solve for x
    x = 160,572,365,304.91/449,646.72
  6. Step 6: Final answer
    x = 357,107.83

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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.