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Finding the Fourth Proportional to 703,640.51, 971,020.06 and 381,347.18

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Solution

The fourth proportional to 703,640.51, 971,020.06 and 381,347.18 is: 526,257.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,640.51 : 971,020.06 = 381,347.18 : x
  2. Step 2: Convert to fraction form
    703,640.51/971,020.06 = 381,347.18/x
  3. Step 3: Cross multiply
    703,640.51x = 971,020.06 × 381,347.18
  4. Step 4: Simplify right side
    703,640.51x = 370,295,755,795.96
  5. Step 5: Solve for x
    x = 370,295,755,795.96/703,640.51
  6. Step 6: Final answer
    x = 526,257.02

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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.