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Finding the Fourth Proportional to 702,910.80, 970,015.54 and 380,621.85

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Solution

The fourth proportional to 702,910.80, 970,015.54 and 380,621.85 is: 525,257.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,910.80 : 970,015.54 = 380,621.85 : x
  2. Step 2: Convert to fraction form
    702,910.80/970,015.54 = 380,621.85/x
  3. Step 3: Cross multiply
    702,910.80x = 970,015.54 × 380,621.85
  4. Step 4: Simplify right side
    702,910.80x = 369,209,109,363.55
  5. Step 5: Solve for x
    x = 369,209,109,363.55/702,910.80
  6. Step 6: Final answer
    x = 525,257.41

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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.