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Finding the Fourth Proportional to 703,638.68, 971,024.78 and 381,348.70

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Solution

The fourth proportional to 703,638.68, 971,024.78 and 381,348.70 is: 526,263.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,638.68 : 971,024.78 = 381,348.70 : x
  2. Step 2: Convert to fraction form
    703,638.68/971,024.78 = 381,348.70/x
  3. Step 3: Cross multiply
    703,638.68x = 971,024.78 × 381,348.70
  4. Step 4: Simplify right side
    703,638.68x = 370,299,037,520.79
  5. Step 5: Solve for x
    x = 370,299,037,520.79/703,638.68
  6. Step 6: Final answer
    x = 526,263.05

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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.