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Finding the Fourth Proportional to 510,071.81, 703,889.57 and 348,921.41

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Solution

The fourth proportional to 510,071.81, 703,889.57 and 348,921.41 is: 481,505.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,071.81 : 703,889.57 = 348,921.41 : x
  2. Step 2: Convert to fraction form
    510,071.81/703,889.57 = 348,921.41/x
  3. Step 3: Cross multiply
    510,071.81x = 703,889.57 × 348,921.41
  4. Step 4: Simplify right side
    510,071.81x = 245,602,139,504.09
  5. Step 5: Solve for x
    x = 245,602,139,504.09/510,071.81
  6. Step 6: Final answer
    x = 481,505.02

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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.