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Finding the Fourth Proportional to 703,171.62, 970,376.40 and 380,880.95

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Solution

The fourth proportional to 703,171.62, 970,376.40 and 380,880.95 is: 525,615.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,171.62 : 970,376.40 = 380,880.95 : x
  2. Step 2: Convert to fraction form
    703,171.62/970,376.40 = 380,880.95/x
  3. Step 3: Cross multiply
    703,171.62x = 970,376.40 × 380,880.95
  4. Step 4: Simplify right side
    703,171.62x = 369,597,880,237.70
  5. Step 5: Solve for x
    x = 369,597,880,237.70/703,171.62
  6. Step 6: Final answer
    x = 525,615.47

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Double scale
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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.