Home / 878,678.96-1,212,538.48-516,140

Finding the Fourth Proportional to 878,678.96, 1,212,538.48 and 516,140

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Solution

The fourth proportional to 878,678.96, 1,212,538.48 and 516,140 is: 712,250.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,678.96 : 1,212,538.48 = 516,140 : x
  2. Step 2: Convert to fraction form
    878,678.96/1,212,538.48 = 516,140/x
  3. Step 3: Cross multiply
    878,678.96x = 1,212,538.48 × 516,140
  4. Step 4: Simplify right side
    878,678.96x = 625,839,611,067.20
  5. Step 5: Solve for x
    x = 625,839,611,067.20/878,678.96
  6. Step 6: Final answer
    x = 712,250.59

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1.5x scale

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.