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Finding the Fourth Proportional to 702,940.53, 970,056.16 and 380,650.62

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Solution

The fourth proportional to 702,940.53, 970,056.16 and 380,650.62 is: 525,296.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,940.53 : 970,056.16 = 380,650.62 : x
  2. Step 2: Convert to fraction form
    702,940.53/970,056.16 = 380,650.62/x
  3. Step 3: Cross multiply
    702,940.53x = 970,056.16 × 380,650.62
  4. Step 4: Simplify right side
    702,940.53x = 369,252,478,738.82
  5. Step 5: Solve for x
    x = 369,252,478,738.82/702,940.53
  6. Step 6: Final answer
    x = 525,296.90

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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.