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Finding the Fourth Proportional to 703,010.19, 970,149.22 and 380,712.91

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Solution

The fourth proportional to 703,010.19, 970,149.22 and 380,712.91 is: 525,381.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,010.19 : 970,149.22 = 380,712.91 : x
  2. Step 2: Convert to fraction form
    703,010.19/970,149.22 = 380,712.91/x
  3. Step 3: Cross multiply
    703,010.19x = 970,149.22 × 380,712.91
  4. Step 4: Simplify right side
    703,010.19x = 369,348,332,680.43
  5. Step 5: Solve for x
    x = 369,348,332,680.43/703,010.19
  6. Step 6: Final answer
    x = 525,381.19

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Half scale
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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.