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Finding the Fourth Proportional to 776,867.05, 1,071,786.28 and 775,669.67

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Solution

The fourth proportional to 776,867.05, 1,071,786.28 and 775,669.67 is: 1,070,134.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,867.05 : 1,071,786.28 = 775,669.67 : x
  2. Step 2: Convert to fraction form
    776,867.05/1,071,786.28 = 775,669.67/x
  3. Step 3: Cross multiply
    776,867.05x = 1,071,786.28 × 775,669.67
  4. Step 4: Simplify right side
    776,867.05x = 831,352,108,293.60
  5. Step 5: Solve for x
    x = 831,352,108,293.60/776,867.05
  6. Step 6: Final answer
    x = 1,070,134.34

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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.