Home / 858,784.23-1,288,378.64-259,750.35

Finding the Fourth Proportional to 858,784.23, 1,288,378.64 and 259,750.35

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Solution

The fourth proportional to 858,784.23, 1,288,378.64 and 259,750.35 is: 389,686.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,784.23 : 1,288,378.64 = 259,750.35 : x
  2. Step 2: Convert to fraction form
    858,784.23/1,288,378.64 = 259,750.35/x
  3. Step 3: Cross multiply
    858,784.23x = 1,288,378.64 × 259,750.35
  4. Step 4: Simplify right side
    858,784.23x = 334,656,802,672.52
  5. Step 5: Solve for x
    x = 334,656,802,672.52/858,784.23
  6. Step 6: Final answer
    x = 389,686.71

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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.