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Finding the Fourth Proportional to 529,060.74, 729,681.56 and 347,958.64

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Solution

The fourth proportional to 529,060.74, 729,681.56 and 347,958.64 is: 479,905.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,060.74 : 729,681.56 = 347,958.64 : x
  2. Step 2: Convert to fraction form
    529,060.74/729,681.56 = 347,958.64/x
  3. Step 3: Cross multiply
    529,060.74x = 729,681.56 × 347,958.64
  4. Step 4: Simplify right side
    529,060.74x = 253,899,003,250.68
  5. Step 5: Solve for x
    x = 253,899,003,250.68/529,060.74
  6. Step 6: Final answer
    x = 479,905.21

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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.