Home / 858,885.40-1,285,703.70-669,928.60

Finding the Fourth Proportional to 858,885.40, 1,285,703.70 and 669,928.60

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Solution

The fourth proportional to 858,885.40, 1,285,703.70 and 669,928.60 is: 1,002,845.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,885.40 : 1,285,703.70 = 669,928.60 : x
  2. Step 2: Convert to fraction form
    858,885.40/1,285,703.70 = 669,928.60/x
  3. Step 3: Cross multiply
    858,885.40x = 1,285,703.70 × 669,928.60
  4. Step 4: Simplify right side
    858,885.40x = 861,329,679,755.82
  5. Step 5: Solve for x
    x = 861,329,679,755.82/858,885.40
  6. Step 6: Final answer
    x = 1,002,845.87

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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.