Home / 669,165.21-923,223.15-427,589.19

Finding the Fourth Proportional to 669,165.21, 923,223.15 and 427,589.19

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Solution

The fourth proportional to 669,165.21, 923,223.15 and 427,589.19 is: 589,929.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,165.21 : 923,223.15 = 427,589.19 : x
  2. Step 2: Convert to fraction form
    669,165.21/923,223.15 = 427,589.19/x
  3. Step 3: Cross multiply
    669,165.21x = 923,223.15 × 427,589.19
  4. Step 4: Simplify right side
    669,165.21x = 394,760,238,897.75
  5. Step 5: Solve for x
    x = 394,760,238,897.75/669,165.21
  6. Step 6: Final answer
    x = 589,929.41

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Half scale
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Double scale
Find fourth proportional to 669,166.21, 923,224.53 and 427,590.19
Similar ratio
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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.