Home / 515,947.75-711,983.95-286,519.59

Finding the Fourth Proportional to 515,947.75, 711,983.95 and 286,519.59

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Solution

The fourth proportional to 515,947.75, 711,983.95 and 286,519.59 is: 395,383.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,947.75 : 711,983.95 = 286,519.59 : x
  2. Step 2: Convert to fraction form
    515,947.75/711,983.95 = 286,519.59/x
  3. Step 3: Cross multiply
    515,947.75x = 711,983.95 × 286,519.59
  4. Step 4: Simplify right side
    515,947.75x = 203,997,348,724.28
  5. Step 5: Solve for x
    x = 203,997,348,724.28/515,947.75
  6. Step 6: Final answer
    x = 395,383.74

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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.