Home / 858,909.70-1,288,364.55-839,226.70

Finding the Fourth Proportional to 858,909.70, 1,288,364.55 and 839,226.70

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Solution

The fourth proportional to 858,909.70, 1,288,364.55 and 839,226.70 is: 1,258,840.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,909.70 : 1,288,364.55 = 839,226.70 : x
  2. Step 2: Convert to fraction form
    858,909.70/1,288,364.55 = 839,226.70/x
  3. Step 3: Cross multiply
    858,909.70x = 1,288,364.55 × 839,226.70
  4. Step 4: Simplify right side
    858,909.70x = 1,081,229,929,693.49
  5. Step 5: Solve for x
    x = 1,081,229,929,693.49/858,909.70
  6. Step 6: Final answer
    x = 1,258,840.05

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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.