Home / 619,619.91-855,006.08-347,631.23

Finding the Fourth Proportional to 619,619.91, 855,006.08 and 347,631.23

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Solution

The fourth proportional to 619,619.91, 855,006.08 and 347,631.23 is: 479,692.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,619.91 : 855,006.08 = 347,631.23 : x
  2. Step 2: Convert to fraction form
    619,619.91/855,006.08 = 347,631.23/x
  3. Step 3: Cross multiply
    619,619.91x = 855,006.08 × 347,631.23
  4. Step 4: Simplify right side
    619,619.91x = 297,226,809,234.69
  5. Step 5: Solve for x
    x = 297,226,809,234.69/619,619.91
  6. Step 6: Final answer
    x = 479,692.15

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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.