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Finding the Fourth Proportional to 449,417.89, 674,128.68 and 112,457.62

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Solution

The fourth proportional to 449,417.89, 674,128.68 and 112,457.62 is: 168,686.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,417.89 : 674,128.68 = 112,457.62 : x
  2. Step 2: Convert to fraction form
    449,417.89/674,128.68 = 112,457.62/x
  3. Step 3: Cross multiply
    449,417.89x = 674,128.68 × 112,457.62
  4. Step 4: Simplify right side
    449,417.89x = 75,810,906,926.54
  5. Step 5: Solve for x
    x = 75,810,906,926.54/449,417.89
  6. Step 6: Final answer
    x = 168,686.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.