Home / 858,795.45-1,287,701.10-259,666.80

Finding the Fourth Proportional to 858,795.45, 1,287,701.10 and 259,666.80

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Solution

The fourth proportional to 858,795.45, 1,287,701.10 and 259,666.80 is: 389,351.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,795.45 : 1,287,701.10 = 259,666.80 : x
  2. Step 2: Convert to fraction form
    858,795.45/1,287,701.10 = 259,666.80/x
  3. Step 3: Cross multiply
    858,795.45x = 1,287,701.10 × 259,666.80
  4. Step 4: Simplify right side
    858,795.45x = 334,373,223,993.48
  5. Step 5: Solve for x
    x = 334,373,223,993.48/858,795.45
  6. Step 6: Final answer
    x = 389,351.42

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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.