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Finding the Fourth Proportional to 703,352.88, 970,627.20 and 381,065.20

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Solution

The fourth proportional to 703,352.88, 970,627.20 and 381,065.20 is: 525,870.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,352.88 : 970,627.20 = 381,065.20 : x
  2. Step 2: Convert to fraction form
    703,352.88/970,627.20 = 381,065.20/x
  3. Step 3: Cross multiply
    703,352.88x = 970,627.20 × 381,065.20
  4. Step 4: Simplify right side
    703,352.88x = 369,872,248,093.44
  5. Step 5: Solve for x
    x = 369,872,248,093.44/703,352.88
  6. Step 6: Final answer
    x = 525,870.10

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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.