Home / 669,215.85-923,175.76-427,244.12

Finding the Fourth Proportional to 669,215.85, 923,175.76 and 427,244.12

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Solution

The fourth proportional to 669,215.85, 923,175.76 and 427,244.12 is: 589,378.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,215.85 : 923,175.76 = 427,244.12 : x
  2. Step 2: Convert to fraction form
    669,215.85/923,175.76 = 427,244.12/x
  3. Step 3: Cross multiply
    669,215.85x = 923,175.76 × 427,244.12
  4. Step 4: Simplify right side
    669,215.85x = 394,421,412,563.91
  5. Step 5: Solve for x
    x = 394,421,412,563.91/669,215.85
  6. Step 6: Final answer
    x = 589,378.47

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Double scale
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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.