Home / 891,128.55-1,338,005.03-691,674.15

Finding the Fourth Proportional to 891,128.55, 1,338,005.03 and 691,674.15

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Solution

The fourth proportional to 891,128.55, 1,338,005.03 and 691,674.15 is: 1,038,529.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,128.55 : 1,338,005.03 = 691,674.15 : x
  2. Step 2: Convert to fraction form
    891,128.55/1,338,005.03 = 691,674.15/x
  3. Step 3: Cross multiply
    891,128.55x = 1,338,005.03 × 691,674.15
  4. Step 4: Simplify right side
    891,128.55x = 925,463,488,362.60
  5. Step 5: Solve for x
    x = 925,463,488,362.60/891,128.55
  6. Step 6: Final answer
    x = 1,038,529.73

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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.