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Finding the Fourth Proportional to 683,560.80, 1,025,389.80 and 210,245.40

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Solution

The fourth proportional to 683,560.80, 1,025,389.80 and 210,245.40 is: 315,383.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,560.80 : 1,025,389.80 = 210,245.40 : x
  2. Step 2: Convert to fraction form
    683,560.80/1,025,389.80 = 210,245.40/x
  3. Step 3: Cross multiply
    683,560.80x = 1,025,389.80 × 210,245.40
  4. Step 4: Simplify right side
    683,560.80x = 215,583,488,656.92
  5. Step 5: Solve for x
    x = 215,583,488,656.92/683,560.80
  6. Step 6: Final answer
    x = 315,383.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.