Home / 858,895.40-1,285,718.70-669,938.60

Finding the Fourth Proportional to 858,895.40, 1,285,718.70 and 669,938.60

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Solution

The fourth proportional to 858,895.40, 1,285,718.70 and 669,938.60 is: 1,002,860.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,895.40 : 1,285,718.70 = 669,938.60 : x
  2. Step 2: Convert to fraction form
    858,895.40/1,285,718.70 = 669,938.60/x
  3. Step 3: Cross multiply
    858,895.40x = 1,285,718.70 × 669,938.60
  4. Step 4: Simplify right side
    858,895.40x = 861,352,585,871.82
  5. Step 5: Solve for x
    x = 861,352,585,871.82/858,895.40
  6. Step 6: Final answer
    x = 1,002,860.87

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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.