Home / 862,830.40-1,294,245.60-778,849.60

Finding the Fourth Proportional to 862,830.40, 1,294,245.60 and 778,849.60

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Solution

The fourth proportional to 862,830.40, 1,294,245.60 and 778,849.60 is: 1,168,274.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,830.40 : 1,294,245.60 = 778,849.60 : x
  2. Step 2: Convert to fraction form
    862,830.40/1,294,245.60 = 778,849.60/x
  3. Step 3: Cross multiply
    862,830.40x = 1,294,245.60 × 778,849.60
  4. Step 4: Simplify right side
    862,830.40x = 1,008,022,667,861.76
  5. Step 5: Solve for x
    x = 1,008,022,667,861.76/862,830.40
  6. Step 6: Final answer
    x = 1,168,274.40

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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.