Home / 515,884.04-711,921.36-286,441.77

Finding the Fourth Proportional to 515,884.04, 711,921.36 and 286,441.77

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Solution

The fourth proportional to 515,884.04, 711,921.36 and 286,441.77 is: 395,290.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,884.04 : 711,921.36 = 286,441.77 : x
  2. Step 2: Convert to fraction form
    515,884.04/711,921.36 = 286,441.77/x
  3. Step 3: Cross multiply
    515,884.04x = 711,921.36 × 286,441.77
  4. Step 4: Simplify right side
    515,884.04x = 203,924,014,459.21
  5. Step 5: Solve for x
    x = 203,924,014,459.21/515,884.04
  6. Step 6: Final answer
    x = 395,290.41

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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.