Home / 515,928.49-711,942.28-289,530.25

Finding the Fourth Proportional to 515,928.49, 711,942.28 and 289,530.25

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Solution

The fourth proportional to 515,928.49, 711,942.28 and 289,530.25 is: 399,529.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,928.49 : 711,942.28 = 289,530.25 : x
  2. Step 2: Convert to fraction form
    515,928.49/711,942.28 = 289,530.25/x
  3. Step 3: Cross multiply
    515,928.49x = 711,942.28 × 289,530.25
  4. Step 4: Simplify right side
    515,928.49x = 206,128,826,313.97
  5. Step 5: Solve for x
    x = 206,128,826,313.97/515,928.49
  6. Step 6: Final answer
    x = 399,529.84

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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.