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Finding the Fourth Proportional to 770,815.20, 1,154,667.60 and 770,815.20

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Solution

The fourth proportional to 770,815.20, 1,154,667.60 and 770,815.20 is: 1,154,667.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,815.20 : 1,154,667.60 = 770,815.20 : x
  2. Step 2: Convert to fraction form
    770,815.20/1,154,667.60 = 770,815.20/x
  3. Step 3: Cross multiply
    770,815.20x = 1,154,667.60 × 770,815.20
  4. Step 4: Simplify right side
    770,815.20x = 890,035,337,027.52
  5. Step 5: Solve for x
    x = 890,035,337,027.52/770,815.20
  6. Step 6: Final answer
    x = 1,154,667.60

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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.