Home / 515,529.03-711,437.80-286,101.18

Finding the Fourth Proportional to 515,529.03, 711,437.80 and 286,101.18

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Solution

The fourth proportional to 515,529.03, 711,437.80 and 286,101.18 is: 394,823.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,529.03 : 711,437.80 = 286,101.18 : x
  2. Step 2: Convert to fraction form
    515,529.03/711,437.80 = 286,101.18/x
  3. Step 3: Cross multiply
    515,529.03x = 711,437.80 × 286,101.18
  4. Step 4: Simplify right side
    515,529.03x = 203,543,190,519.42
  5. Step 5: Solve for x
    x = 203,543,190,519.42/515,529.03
  6. Step 6: Final answer
    x = 394,823.92

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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.