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Finding the Fourth Proportional to 655,564.96, 904,679.40 and 383,684.64

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Solution

The fourth proportional to 655,564.96, 904,679.40 and 383,684.64 is: 529,484.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,564.96 : 904,679.40 = 383,684.64 : x
  2. Step 2: Convert to fraction form
    655,564.96/904,679.40 = 383,684.64/x
  3. Step 3: Cross multiply
    655,564.96x = 904,679.40 × 383,684.64
  4. Step 4: Simplify right side
    655,564.96x = 347,111,589,904.42
  5. Step 5: Solve for x
    x = 347,111,589,904.42/655,564.96
  6. Step 6: Final answer
    x = 529,484.66

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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.