Home / 674,930.40-1,012,395.60-394,303.20

Finding the Fourth Proportional to 674,930.40, 1,012,395.60 and 394,303.20

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Solution

The fourth proportional to 674,930.40, 1,012,395.60 and 394,303.20 is: 591,454.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,930.40 : 1,012,395.60 = 394,303.20 : x
  2. Step 2: Convert to fraction form
    674,930.40/1,012,395.60 = 394,303.20/x
  3. Step 3: Cross multiply
    674,930.40x = 1,012,395.60 × 394,303.20
  4. Step 4: Simplify right side
    674,930.40x = 399,190,824,745.92
  5. Step 5: Solve for x
    x = 399,190,824,745.92/674,930.40
  6. Step 6: Final answer
    x = 591,454.80

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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.