Home / 858,953.40-1,288,102.05-259,715.40

Finding the Fourth Proportional to 858,953.40, 1,288,102.05 and 259,715.40

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Solution

The fourth proportional to 858,953.40, 1,288,102.05 and 259,715.40 is: 389,473.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,953.40 : 1,288,102.05 = 259,715.40 : x
  2. Step 2: Convert to fraction form
    858,953.40/1,288,102.05 = 259,715.40/x
  3. Step 3: Cross multiply
    858,953.40x = 1,288,102.05 × 259,715.40
  4. Step 4: Simplify right side
    858,953.40x = 334,539,939,156.57
  5. Step 5: Solve for x
    x = 334,539,939,156.57/858,953.40
  6. Step 6: Final answer
    x = 389,473.91

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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.