Home / 878,899.59-1,212,890.78-516,338.55

Finding the Fourth Proportional to 878,899.59, 1,212,890.78 and 516,338.55

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Solution

The fourth proportional to 878,899.59, 1,212,890.78 and 516,338.55 is: 712,552.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,899.59 : 1,212,890.78 = 516,338.55 : x
  2. Step 2: Convert to fraction form
    878,899.59/1,212,890.78 = 516,338.55/x
  3. Step 3: Cross multiply
    878,899.59x = 1,212,890.78 × 516,338.55
  4. Step 4: Simplify right side
    878,899.59x = 626,262,264,071.88
  5. Step 5: Solve for x
    x = 626,262,264,071.88/878,899.59
  6. Step 6: Final answer
    x = 712,552.69

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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.