Home / 515,441.17-711,344.33-289,101.25

Finding the Fourth Proportional to 515,441.17, 711,344.33 and 289,101.25

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Solution

The fourth proportional to 515,441.17, 711,344.33 and 289,101.25 is: 398,979.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,441.17 : 711,344.33 = 289,101.25 : x
  2. Step 2: Convert to fraction form
    515,441.17/711,344.33 = 289,101.25/x
  3. Step 3: Cross multiply
    515,441.17x = 711,344.33 × 289,101.25
  4. Step 4: Simplify right side
    515,441.17x = 205,650,534,983.41
  5. Step 5: Solve for x
    x = 205,650,534,983.41/515,441.17
  6. Step 6: Final answer
    x = 398,979.64

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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.