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Finding the Fourth Proportional to 388,460,673.60, 582,691,010.40 and 266,016,667.20

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Solution

The fourth proportional to 388,460,673.60, 582,691,010.40 and 266,016,667.20 is: 399,025,000.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,460,673.60 : 582,691,010.40 = 266,016,667.20 : x
  2. Step 2: Convert to fraction form
    388,460,673.60/582,691,010.40 = 266,016,667.20/x
  3. Step 3: Cross multiply
    388,460,673.60x = 582,691,010.40 × 266,016,667.20
  4. Step 4: Simplify right side
    388,460,673.60x = 155,005,520,594,008,512
  5. Step 5: Solve for x
    x = 155,005,520,594,008,512/388,460,673.60
  6. Step 6: Final answer
    x = 399,025,000.80

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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.