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Finding the Fourth Proportional to 502,866.31, 693,955.48 and 276,511.81

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Solution

The fourth proportional to 502,866.31, 693,955.48 and 276,511.81 is: 381,586.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,866.31 : 693,955.48 = 276,511.81 : x
  2. Step 2: Convert to fraction form
    502,866.31/693,955.48 = 276,511.81/x
  3. Step 3: Cross multiply
    502,866.31x = 693,955.48 × 276,511.81
  4. Step 4: Simplify right side
    502,866.31x = 191,886,885,834.22
  5. Step 5: Solve for x
    x = 191,886,885,834.22/502,866.31
  6. Step 6: Final answer
    x = 381,586.28

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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.