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Finding the Fourth Proportional to 666,066.50, 919,193.64 and 364,260.50

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Solution

The fourth proportional to 666,066.50, 919,193.64 and 364,260.50 is: 502,691.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,066.50 : 919,193.64 = 364,260.50 : x
  2. Step 2: Convert to fraction form
    666,066.50/919,193.64 = 364,260.50/x
  3. Step 3: Cross multiply
    666,066.50x = 919,193.64 × 364,260.50
  4. Step 4: Simplify right side
    666,066.50x = 334,825,934,903.22
  5. Step 5: Solve for x
    x = 334,825,934,903.22/666,066.50
  6. Step 6: Final answer
    x = 502,691.45

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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.