Home / 714,189.97-985,579.45-391,905.46

Finding the Fourth Proportional to 714,189.97, 985,579.45 and 391,905.46

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Solution

The fourth proportional to 714,189.97, 985,579.45 and 391,905.46 is: 540,828.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,189.97 : 985,579.45 = 391,905.46 : x
  2. Step 2: Convert to fraction form
    714,189.97/985,579.45 = 391,905.46/x
  3. Step 3: Cross multiply
    714,189.97x = 985,579.45 × 391,905.46
  4. Step 4: Simplify right side
    714,189.97x = 386,253,967,718.80
  5. Step 5: Solve for x
    x = 386,253,967,718.80/714,189.97
  6. Step 6: Final answer
    x = 540,828.05

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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.