Home / 515,678.14-711,624.79-286,222.04

Finding the Fourth Proportional to 515,678.14, 711,624.79 and 286,222.04

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Solution

The fourth proportional to 515,678.14, 711,624.79 and 286,222.04 is: 394,980.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,678.14 : 711,624.79 = 286,222.04 : x
  2. Step 2: Convert to fraction form
    515,678.14/711,624.79 = 286,222.04/x
  3. Step 3: Cross multiply
    515,678.14x = 711,624.79 × 286,222.04
  4. Step 4: Simplify right side
    515,678.14x = 203,682,699,108.37
  5. Step 5: Solve for x
    x = 203,682,699,108.37/515,678.14
  6. Step 6: Final answer
    x = 394,980.29

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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.