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Finding the Fourth Proportional to 655,849.11, 905,489.64 and 535,278

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Solution

The fourth proportional to 655,849.11, 905,489.64 and 535,278 is: 739,024.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,849.11 : 905,489.64 = 535,278 : x
  2. Step 2: Convert to fraction form
    655,849.11/905,489.64 = 535,278/x
  3. Step 3: Cross multiply
    655,849.11x = 905,489.64 × 535,278
  4. Step 4: Simplify right side
    655,849.11x = 484,688,683,519.92
  5. Step 5: Solve for x
    x = 484,688,683,519.92/655,849.11
  6. Step 6: Final answer
    x = 739,024.69

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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.