Home / 515,615.28-711,538.36-286,159.24

Finding the Fourth Proportional to 515,615.28, 711,538.36 and 286,159.24

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Solution

The fourth proportional to 515,615.28, 711,538.36 and 286,159.24 is: 394,893.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,615.28 : 711,538.36 = 286,159.24 : x
  2. Step 2: Convert to fraction form
    515,615.28/711,538.36 = 286,159.24/x
  3. Step 3: Cross multiply
    515,615.28x = 711,538.36 × 286,159.24
  4. Step 4: Simplify right side
    515,615.28x = 203,613,276,328.45
  5. Step 5: Solve for x
    x = 203,613,276,328.45/515,615.28
  6. Step 6: Final answer
    x = 394,893.80

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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.