Home / 515,619.64-711,559.38-286,192.84

Finding the Fourth Proportional to 515,619.64, 711,559.38 and 286,192.84

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Solution

The fourth proportional to 515,619.64, 711,559.38 and 286,192.84 is: 394,948.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,619.64 : 711,559.38 = 286,192.84 : x
  2. Step 2: Convert to fraction form
    515,619.64/711,559.38 = 286,192.84/x
  3. Step 3: Cross multiply
    515,619.64x = 711,559.38 × 286,192.84
  4. Step 4: Simplify right side
    515,619.64x = 203,643,199,790.84
  5. Step 5: Solve for x
    x = 203,643,199,790.84/515,619.64
  6. Step 6: Final answer
    x = 394,948.49

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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.