Home / 1,377,028.78-1,900,261.83-765,165.74

Finding the Fourth Proportional to 1,377,028.78, 1,900,261.83 and 765,165.74

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Solution

The fourth proportional to 1,377,028.78, 1,900,261.83 and 765,165.74 is: 1,055,907.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377,028.78 : 1,900,261.83 = 765,165.74 : x
  2. Step 2: Convert to fraction form
    1,377,028.78/1,900,261.83 = 765,165.74/x
  3. Step 3: Cross multiply
    1,377,028.78x = 1,900,261.83 × 765,165.74
  4. Step 4: Simplify right side
    1,377,028.78x = 1,454,015,249,345.70
  5. Step 5: Solve for x
    x = 1,454,015,249,345.70/1,377,028.78
  6. Step 6: Final answer
    x = 1,055,907.67

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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.