Home / 1,223,138.00-1,688,774.85-764,458.74

Finding the Fourth Proportional to 1,223,138.00, 1,688,774.85 and 764,458.74

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Solution

The fourth proportional to 1,223,138.00, 1,688,774.85 and 764,458.74 is: 1,055,480.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,138.00 : 1,688,774.85 = 764,458.74 : x
  2. Step 2: Convert to fraction form
    1,223,138.00/1,688,774.85 = 764,458.74/x
  3. Step 3: Cross multiply
    1,223,138.00x = 1,688,774.85 × 764,458.74
  4. Step 4: Simplify right side
    1,223,138.00x = 1,290,998,693,974.69
  5. Step 5: Solve for x
    x = 1,290,998,693,974.69/1,223,138.00
  6. Step 6: Final answer
    x = 1,055,480.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.