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Finding the Fourth Proportional to 702,979.92, 970,112.32 and 380,690.01

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Solution

The fourth proportional to 702,979.92, 970,112.32 and 380,690.01 is: 525,352.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,979.92 : 970,112.32 = 380,690.01 : x
  2. Step 2: Convert to fraction form
    702,979.92/970,112.32 = 380,690.01/x
  3. Step 3: Cross multiply
    702,979.92x = 970,112.32 × 380,690.01
  4. Step 4: Simplify right side
    702,979.92x = 369,312,067,850.20
  5. Step 5: Solve for x
    x = 369,312,067,850.20/702,979.92
  6. Step 6: Final answer
    x = 525,352.23

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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.