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Finding the Fourth Proportional to 702,995.72, 970,132.61 and 380,704.82

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Solution

The fourth proportional to 702,995.72, 970,132.61 and 380,704.82 is: 525,371.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,995.72 : 970,132.61 = 380,704.82 : x
  2. Step 2: Convert to fraction form
    702,995.72/970,132.61 = 380,704.82/x
  3. Step 3: Cross multiply
    702,995.72x = 970,132.61 × 380,704.82
  4. Step 4: Simplify right side
    702,995.72x = 369,334,153,911.99
  5. Step 5: Solve for x
    x = 369,334,153,911.99/702,995.72
  6. Step 6: Final answer
    x = 525,371.84

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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.