Home / 787,138.20-1,183,331.70-671,664.60

Finding the Fourth Proportional to 787,138.20, 1,183,331.70 and 671,664.60

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Solution

The fourth proportional to 787,138.20, 1,183,331.70 and 671,664.60 is: 1,009,736.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,138.20 : 1,183,331.70 = 671,664.60 : x
  2. Step 2: Convert to fraction form
    787,138.20/1,183,331.70 = 671,664.60/x
  3. Step 3: Cross multiply
    787,138.20x = 1,183,331.70 × 671,664.60
  4. Step 4: Simplify right side
    787,138.20x = 794,802,012,947.82
  5. Step 5: Solve for x
    x = 794,802,012,947.82/787,138.20
  6. Step 6: Final answer
    x = 1,009,736.30

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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.