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Finding the Fourth Proportional to 445,366, 666,374.88 and 312,505.60

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Solution

The fourth proportional to 445,366, 666,374.88 and 312,505.60 is: 467,583.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,366 : 666,374.88 = 312,505.60 : x
  2. Step 2: Convert to fraction form
    445,366/666,374.88 = 312,505.60/x
  3. Step 3: Cross multiply
    445,366x = 666,374.88 × 312,505.60
  4. Step 4: Simplify right side
    445,366x = 208,245,881,699.33
  5. Step 5: Solve for x
    x = 208,245,881,699.33/445,366
  6. Step 6: Final answer
    x = 467,583.70

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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.