Home / 858,902.20-1,288,499.10-259,858.60

Finding the Fourth Proportional to 858,902.20, 1,288,499.10 and 259,858.60

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Solution

The fourth proportional to 858,902.20, 1,288,499.10 and 259,858.60 is: 389,832.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,902.20 : 1,288,499.10 = 259,858.60 : x
  2. Step 2: Convert to fraction form
    858,902.20/1,288,499.10 = 259,858.60/x
  3. Step 3: Cross multiply
    858,902.20x = 1,288,499.10 × 259,858.60
  4. Step 4: Simplify right side
    858,902.20x = 334,827,572,227.26
  5. Step 5: Solve for x
    x = 334,827,572,227.26/858,902.20
  6. Step 6: Final answer
    x = 389,832.01

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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.