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Finding the Fourth Proportional to 1,721,228.22, 2,375,795.16 and 1,148,266.98

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Solution

The fourth proportional to 1,721,228.22, 2,375,795.16 and 1,148,266.98 is: 1,584,942.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721,228.22 : 2,375,795.16 = 1,148,266.98 : x
  2. Step 2: Convert to fraction form
    1,721,228.22/2,375,795.16 = 1,148,266.98/x
  3. Step 3: Cross multiply
    1,721,228.22x = 2,375,795.16 × 1,148,266.98
  4. Step 4: Simplify right side
    1,721,228.22x = 2,728,047,133,471.82
  5. Step 5: Solve for x
    x = 2,728,047,133,471.82/1,721,228.22
  6. Step 6: Final answer
    x = 1,584,942.14

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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.