Home / 918,138.60-1,377,207.90-681,942.60

Finding the Fourth Proportional to 918,138.60, 1,377,207.90 and 681,942.60

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Solution

The fourth proportional to 918,138.60, 1,377,207.90 and 681,942.60 is: 1,022,913.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,138.60 : 1,377,207.90 = 681,942.60 : x
  2. Step 2: Convert to fraction form
    918,138.60/1,377,207.90 = 681,942.60/x
  3. Step 3: Cross multiply
    918,138.60x = 1,377,207.90 × 681,942.60
  4. Step 4: Simplify right side
    918,138.60x = 939,176,736,066.54
  5. Step 5: Solve for x
    x = 939,176,736,066.54/918,138.60
  6. Step 6: Final answer
    x = 1,022,913.90

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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.