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Finding the Fourth Proportional to 2,600,307.04, 3,899,761.68 and 917,188.96

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Solution

The fourth proportional to 2,600,307.04, 3,899,761.68 and 917,188.96 is: 1,375,536.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,600,307.04 : 3,899,761.68 = 917,188.96 : x
  2. Step 2: Convert to fraction form
    2,600,307.04/3,899,761.68 = 917,188.96/x
  3. Step 3: Cross multiply
    2,600,307.04x = 3,899,761.68 × 917,188.96
  4. Step 4: Simplify right side
    2,600,307.04x = 3,576,818,359,527.05
  5. Step 5: Solve for x
    x = 3,576,818,359,527.05/2,600,307.04
  6. Step 6: Final answer
    x = 1,375,536.93

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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.