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Finding the Fourth Proportional to 655,103.08, 904,535 and 644,640.27

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Solution

The fourth proportional to 655,103.08, 904,535 and 644,640.27 is: 890,088.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,103.08 : 904,535 = 644,640.27 : x
  2. Step 2: Convert to fraction form
    655,103.08/904,535 = 644,640.27/x
  3. Step 3: Cross multiply
    655,103.08x = 904,535 × 644,640.27
  4. Step 4: Simplify right side
    655,103.08x = 583,099,686,624.45
  5. Step 5: Solve for x
    x = 583,099,686,624.45/655,103.08
  6. Step 6: Final answer
    x = 890,088.45

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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.