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Finding the Fourth Proportional to 703,638.95, 971,023.43 and 381,348.96

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Solution

The fourth proportional to 703,638.95, 971,023.43 and 381,348.96 is: 526,262.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,638.95 : 971,023.43 = 381,348.96 : x
  2. Step 2: Convert to fraction form
    703,638.95/971,023.43 = 381,348.96/x
  3. Step 3: Cross multiply
    703,638.95x = 971,023.43 × 381,348.96
  4. Step 4: Simplify right side
    703,638.95x = 370,298,773,259.39
  5. Step 5: Solve for x
    x = 370,298,773,259.39/703,638.95
  6. Step 6: Final answer
    x = 526,262.48

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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.