Home / 878,856.75-1,212,811.38-516,313.71

Finding the Fourth Proportional to 878,856.75, 1,212,811.38 and 516,313.71

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Solution

The fourth proportional to 878,856.75, 1,212,811.38 and 516,313.71 is: 712,506.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,856.75 : 1,212,811.38 = 516,313.71 : x
  2. Step 2: Convert to fraction form
    878,856.75/1,212,811.38 = 516,313.71/x
  3. Step 3: Cross multiply
    878,856.75x = 1,212,811.38 × 516,313.71
  4. Step 4: Simplify right side
    878,856.75x = 626,191,143,138.02
  5. Step 5: Solve for x
    x = 626,191,143,138.02/878,856.75
  6. Step 6: Final answer
    x = 712,506.50

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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.