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Finding the Fourth Proportional to 665,371.32, 918,231.30 and 371,027.76

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Solution

The fourth proportional to 665,371.32, 918,231.30 and 371,027.76 is: 512,028.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,371.32 : 918,231.30 = 371,027.76 : x
  2. Step 2: Convert to fraction form
    665,371.32/918,231.30 = 371,027.76/x
  3. Step 3: Cross multiply
    665,371.32x = 918,231.30 × 371,027.76
  4. Step 4: Simplify right side
    665,371.32x = 340,689,302,400.89
  5. Step 5: Solve for x
    x = 340,689,302,400.89/665,371.32
  6. Step 6: Final answer
    x = 512,028.84

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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.