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Finding the Fourth Proportional to 702,914.55, 970,020.72 and 380,625.60

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Solution

The fourth proportional to 702,914.55, 970,020.72 and 380,625.60 is: 525,262.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,914.55 : 970,020.72 = 380,625.60 : x
  2. Step 2: Convert to fraction form
    702,914.55/970,020.72 = 380,625.60/x
  3. Step 3: Cross multiply
    702,914.55x = 970,020.72 × 380,625.60
  4. Step 4: Simplify right side
    702,914.55x = 369,214,718,562.43
  5. Step 5: Solve for x
    x = 369,214,718,562.43/702,914.55
  6. Step 6: Final answer
    x = 525,262.59

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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.