Home / 858,920.40-1,288,380.60-669,963.60

Finding the Fourth Proportional to 858,920.40, 1,288,380.60 and 669,963.60

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Solution

The fourth proportional to 858,920.40, 1,288,380.60 and 669,963.60 is: 1,004,945.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,920.40 : 1,288,380.60 = 669,963.60 : x
  2. Step 2: Convert to fraction form
    858,920.40/1,288,380.60 = 669,963.60/x
  3. Step 3: Cross multiply
    858,920.40x = 1,288,380.60 × 669,963.60
  4. Step 4: Simplify right side
    858,920.40x = 863,168,104,946.16
  5. Step 5: Solve for x
    x = 863,168,104,946.16/858,920.40
  6. Step 6: Final answer
    x = 1,004,945.40

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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.