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Finding the Fourth Proportional to 680,649.53, 939,279.18 and 374,722.86

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Solution

The fourth proportional to 680,649.53, 939,279.18 and 374,722.86 is: 517,108.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,649.53 : 939,279.18 = 374,722.86 : x
  2. Step 2: Convert to fraction form
    680,649.53/939,279.18 = 374,722.86/x
  3. Step 3: Cross multiply
    680,649.53x = 939,279.18 × 374,722.86
  4. Step 4: Simplify right side
    680,649.53x = 351,969,380,668.06
  5. Step 5: Solve for x
    x = 351,969,380,668.06/680,649.53
  6. Step 6: Final answer
    x = 517,108.09

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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.