Home / 449,546.40-674,319.60-428,810.40

Finding the Fourth Proportional to 449,546.40, 674,319.60 and 428,810.40

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Solution

The fourth proportional to 449,546.40, 674,319.60 and 428,810.40 is: 643,215.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,546.40 : 674,319.60 = 428,810.40 : x
  2. Step 2: Convert to fraction form
    449,546.40/674,319.60 = 428,810.40/x
  3. Step 3: Cross multiply
    449,546.40x = 674,319.60 × 428,810.40
  4. Step 4: Simplify right side
    449,546.40x = 289,155,257,403.84
  5. Step 5: Solve for x
    x = 289,155,257,403.84/449,546.40
  6. Step 6: Final answer
    x = 643,215.60

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Similar ratio
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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.