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Finding the Fourth Proportional to 613,266.60, 920,446.65 and 360,230.70

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Solution

The fourth proportional to 613,266.60, 920,446.65 and 360,230.70 is: 540,667.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,266.60 : 920,446.65 = 360,230.70 : x
  2. Step 2: Convert to fraction form
    613,266.60/920,446.65 = 360,230.70/x
  3. Step 3: Cross multiply
    613,266.60x = 920,446.65 × 360,230.70
  4. Step 4: Simplify right side
    613,266.60x = 331,573,141,042.16
  5. Step 5: Solve for x
    x = 331,573,141,042.16/613,266.60
  6. Step 6: Final answer
    x = 540,667.21

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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.