Home / 1,215,865.26-1,678,098.15-823,220.10

Finding the Fourth Proportional to 1,215,865.26, 1,678,098.15 and 823,220.10

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Solution

The fourth proportional to 1,215,865.26, 1,678,098.15 and 823,220.10 is: 1,136,181.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,865.26 : 1,678,098.15 = 823,220.10 : x
  2. Step 2: Convert to fraction form
    1,215,865.26/1,678,098.15 = 823,220.10/x
  3. Step 3: Cross multiply
    1,215,865.26x = 1,678,098.15 × 823,220.10
  4. Step 4: Simplify right side
    1,215,865.26x = 1,381,444,126,852.82
  5. Step 5: Solve for x
    x = 1,381,444,126,852.82/1,215,865.26
  6. Step 6: Final answer
    x = 1,136,181.92

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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.