Home / 878,878.29-1,212,861.54-516,317.43

Finding the Fourth Proportional to 878,878.29, 1,212,861.54 and 516,317.43

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Solution

The fourth proportional to 878,878.29, 1,212,861.54 and 516,317.43 is: 712,523.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,878.29 : 1,212,861.54 = 516,317.43 : x
  2. Step 2: Convert to fraction form
    878,878.29/1,212,861.54 = 516,317.43/x
  3. Step 3: Cross multiply
    878,878.29x = 1,212,861.54 × 516,317.43
  4. Step 4: Simplify right side
    878,878.29x = 626,221,553,278.64
  5. Step 5: Solve for x
    x = 626,221,553,278.64/878,878.29
  6. Step 6: Final answer
    x = 712,523.63

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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.