Home / 879,327.40-1,213,086.66-516,587.56

Finding the Fourth Proportional to 879,327.40, 1,213,086.66 and 516,587.56

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Solution

The fourth proportional to 879,327.40, 1,213,086.66 and 516,587.56 is: 712,664.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,327.40 : 1,213,086.66 = 516,587.56 : x
  2. Step 2: Convert to fraction form
    879,327.40/1,213,086.66 = 516,587.56/x
  3. Step 3: Cross multiply
    879,327.40x = 1,213,086.66 × 516,587.56
  4. Step 4: Simplify right side
    879,327.40x = 626,665,477,757.95
  5. Step 5: Solve for x
    x = 626,665,477,757.95/879,327.40
  6. Step 6: Final answer
    x = 712,664.56

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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.