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Finding the Fourth Proportional to 666,295.89, 919,485.59 and 360,372.60

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Solution

The fourth proportional to 666,295.89, 919,485.59 and 360,372.60 is: 497,312.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,295.89 : 919,485.59 = 360,372.60 : x
  2. Step 2: Convert to fraction form
    666,295.89/919,485.59 = 360,372.60/x
  3. Step 3: Cross multiply
    666,295.89x = 919,485.59 × 360,372.60
  4. Step 4: Simplify right side
    666,295.89x = 331,357,410,928.97
  5. Step 5: Solve for x
    x = 331,357,410,928.97/666,295.89
  6. Step 6: Final answer
    x = 497,312.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.