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Finding the Fourth Proportional to 703,261.72, 970,505.83 and 380,971.58

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Solution

The fourth proportional to 703,261.72, 970,505.83 and 380,971.58 is: 525,743.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,261.72 : 970,505.83 = 380,971.58 : x
  2. Step 2: Convert to fraction form
    703,261.72/970,505.83 = 380,971.58/x
  3. Step 3: Cross multiply
    703,261.72x = 970,505.83 × 380,971.58
  4. Step 4: Simplify right side
    703,261.72x = 369,735,139,454.31
  5. Step 5: Solve for x
    x = 369,735,139,454.31/703,261.72
  6. Step 6: Final answer
    x = 525,743.30

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Double scale
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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.