Home / 918,864-1,268,110.08-516,533.76

Finding the Fourth Proportional to 918,864, 1,268,110.08 and 516,533.76

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Solution

The fourth proportional to 918,864, 1,268,110.08 and 516,533.76 is: 712,860.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,864 : 1,268,110.08 = 516,533.76 : x
  2. Step 2: Convert to fraction form
    918,864/1,268,110.08 = 516,533.76/x
  3. Step 3: Cross multiply
    918,864x = 1,268,110.08 × 516,533.76
  4. Step 4: Simplify right side
    918,864x = 655,021,667,716.30
  5. Step 5: Solve for x
    x = 655,021,667,716.30/918,864
  6. Step 6: Final answer
    x = 712,860.30

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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.