Home / 387,072,620.40-580,608,930.60-347,657,631.60

Finding the Fourth Proportional to 387,072,620.40, 580,608,930.60 and 347,657,631.60

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Solution

The fourth proportional to 387,072,620.40, 580,608,930.60 and 347,657,631.60 is: 521,486,447.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,072,620.40 : 580,608,930.60 = 347,657,631.60 : x
  2. Step 2: Convert to fraction form
    387,072,620.40/580,608,930.60 = 347,657,631.60/x
  3. Step 3: Cross multiply
    387,072,620.40x = 580,608,930.60 × 347,657,631.60
  4. Step 4: Simplify right side
    387,072,620.40x = 201,853,125,698,204,800
  5. Step 5: Solve for x
    x = 201,853,125,698,204,800/387,072,620.40
  6. Step 6: Final answer
    x = 521,486,447.40

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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.