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Finding the Fourth Proportional to 680,749.92, 939,369.96 and 374,822.64

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Solution

The fourth proportional to 680,749.92, 939,369.96 and 374,822.64 is: 517,219.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,749.92 : 939,369.96 = 374,822.64 : x
  2. Step 2: Convert to fraction form
    680,749.92/939,369.96 = 374,822.64/x
  3. Step 3: Cross multiply
    680,749.92x = 939,369.96 × 374,822.64
  4. Step 4: Simplify right side
    680,749.92x = 352,097,128,343.89
  5. Step 5: Solve for x
    x = 352,097,128,343.89/680,749.92
  6. Step 6: Final answer
    x = 517,219.49

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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.