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Finding the Fourth Proportional to 703,713.81, 971,119.59 and 381,415.62

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Solution

The fourth proportional to 703,713.81, 971,119.59 and 381,415.62 is: 526,350.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,713.81 : 971,119.59 = 381,415.62 : x
  2. Step 2: Convert to fraction form
    703,713.81/971,119.59 = 381,415.62/x
  3. Step 3: Cross multiply
    703,713.81x = 971,119.59 × 381,415.62
  4. Step 4: Simplify right side
    703,713.81x = 370,400,180,514.00
  5. Step 5: Solve for x
    x = 370,400,180,514.00/703,713.81
  6. Step 6: Final answer
    x = 526,350.59

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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.