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Finding the Fourth Proportional to 702,935.78, 970,049.62 and 380,645.86

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Solution

The fourth proportional to 702,935.78, 970,049.62 and 380,645.86 is: 525,290.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,935.78 : 970,049.62 = 380,645.86 : x
  2. Step 2: Convert to fraction form
    702,935.78/970,049.62 = 380,645.86/x
  3. Step 3: Cross multiply
    702,935.78x = 970,049.62 × 380,645.86
  4. Step 4: Simplify right side
    702,935.78x = 369,245,371,847.57
  5. Step 5: Solve for x
    x = 369,245,371,847.57/702,935.78
  6. Step 6: Final answer
    x = 525,290.34

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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.