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Finding the Fourth Proportional to 703,005.21, 970,147.53 and 380,716.74

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Solution

The fourth proportional to 703,005.21, 970,147.53 and 380,716.74 is: 525,389.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,005.21 : 970,147.53 = 380,716.74 : x
  2. Step 2: Convert to fraction form
    703,005.21/970,147.53 = 380,716.74/x
  3. Step 3: Cross multiply
    703,005.21x = 970,147.53 × 380,716.74
  4. Step 4: Simplify right side
    703,005.21x = 369,351,404,940.65
  5. Step 5: Solve for x
    x = 369,351,404,940.65/703,005.21
  6. Step 6: Final answer
    x = 525,389.29

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Similar ratio
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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.