Home / 858,897.45-1,288,491.98-259,853.85

Finding the Fourth Proportional to 858,897.45, 1,288,491.98 and 259,853.85

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Solution

The fourth proportional to 858,897.45, 1,288,491.98 and 259,853.85 is: 389,824.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,897.45 : 1,288,491.98 = 259,853.85 : x
  2. Step 2: Convert to fraction form
    858,897.45/1,288,491.98 = 259,853.85/x
  3. Step 3: Cross multiply
    858,897.45x = 1,288,491.98 × 259,853.85
  4. Step 4: Simplify right side
    858,897.45x = 334,819,600,397.85
  5. Step 5: Solve for x
    x = 334,819,600,397.85/858,897.45
  6. Step 6: Final answer
    x = 389,824.89

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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.