Home / 665,530.78-997,896.30-260,240.19

Finding the Fourth Proportional to 665,530.78, 997,896.30 and 260,240.19

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Solution

The fourth proportional to 665,530.78, 997,896.30 and 260,240.19 is: 390,203.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,530.78 : 997,896.30 = 260,240.19 : x
  2. Step 2: Convert to fraction form
    665,530.78/997,896.30 = 260,240.19/x
  3. Step 3: Cross multiply
    665,530.78x = 997,896.30 × 260,240.19
  4. Step 4: Simplify right side
    665,530.78x = 259,692,717,722.82
  5. Step 5: Solve for x
    x = 259,692,717,722.82/665,530.78
  6. Step 6: Final answer
    x = 390,203.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.