Home / 515,845.69-711,932.67-289,491.19

Finding the Fourth Proportional to 515,845.69, 711,932.67 and 289,491.19

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Solution

The fourth proportional to 515,845.69, 711,932.67 and 289,491.19 is: 399,534.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,845.69 : 711,932.67 = 289,491.19 : x
  2. Step 2: Convert to fraction form
    515,845.69/711,932.67 = 289,491.19/x
  3. Step 3: Cross multiply
    515,845.69x = 711,932.67 × 289,491.19
  4. Step 4: Simplify right side
    515,845.69x = 206,098,234,058.35
  5. Step 5: Solve for x
    x = 206,098,234,058.35/515,845.69
  6. Step 6: Final answer
    x = 399,534.67

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1.5x scale

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.