Home / 878,839.20-1,212,787.19-516,296.11

Finding the Fourth Proportional to 878,839.20, 1,212,787.19 and 516,296.11

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Solution

The fourth proportional to 878,839.20, 1,212,787.19 and 516,296.11 is: 712,482.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,839.20 : 1,212,787.19 = 516,296.11 : x
  2. Step 2: Convert to fraction form
    878,839.20/1,212,787.19 = 516,296.11/x
  3. Step 3: Cross multiply
    878,839.20x = 1,212,787.19 × 516,296.11
  4. Step 4: Simplify right side
    878,839.20x = 626,157,308,454.83
  5. Step 5: Solve for x
    x = 626,157,308,454.83/878,839.20
  6. Step 6: Final answer
    x = 712,482.22

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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.