Home / 664,008.76-916,321.26-377,522.70

Finding the Fourth Proportional to 664,008.76, 916,321.26 and 377,522.70

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Solution

The fourth proportional to 664,008.76, 916,321.26 and 377,522.70 is: 520,975.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,008.76 : 916,321.26 = 377,522.70 : x
  2. Step 2: Convert to fraction form
    664,008.76/916,321.26 = 377,522.70/x
  3. Step 3: Cross multiply
    664,008.76x = 916,321.26 × 377,522.70
  4. Step 4: Simplify right side
    664,008.76x = 345,932,076,142.60
  5. Step 5: Solve for x
    x = 345,932,076,142.60/664,008.76
  6. Step 6: Final answer
    x = 520,975.17

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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.