Home / 515,678.27-711,622.67-286,223.69

Finding the Fourth Proportional to 515,678.27, 711,622.67 and 286,223.69

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Solution

The fourth proportional to 515,678.27, 711,622.67 and 286,223.69 is: 394,981.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,678.27 : 711,622.67 = 286,223.69 : x
  2. Step 2: Convert to fraction form
    515,678.27/711,622.67 = 286,223.69/x
  3. Step 3: Cross multiply
    515,678.27x = 711,622.67 × 286,223.69
  4. Step 4: Simplify right side
    515,678.27x = 203,683,266,842.99
  5. Step 5: Solve for x
    x = 203,683,266,842.99/515,678.27
  6. Step 6: Final answer
    x = 394,981.29

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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.