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Finding the Fourth Proportional to 606,665.20, 909,997.80 and 492,503.80

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Solution

The fourth proportional to 606,665.20, 909,997.80 and 492,503.80 is: 738,755.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,665.20 : 909,997.80 = 492,503.80 : x
  2. Step 2: Convert to fraction form
    606,665.20/909,997.80 = 492,503.80/x
  3. Step 3: Cross multiply
    606,665.20x = 909,997.80 × 492,503.80
  4. Step 4: Simplify right side
    606,665.20x = 448,177,374,491.64
  5. Step 5: Solve for x
    x = 448,177,374,491.64/606,665.20
  6. Step 6: Final answer
    x = 738,755.70

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.