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Finding the Fourth Proportional to 655,121.96, 904,088.40 and 356,775.86

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Solution

The fourth proportional to 655,121.96, 904,088.40 and 356,775.86 is: 492,361.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,121.96 : 904,088.40 = 356,775.86 : x
  2. Step 2: Convert to fraction form
    655,121.96/904,088.40 = 356,775.86/x
  3. Step 3: Cross multiply
    655,121.96x = 904,088.40 × 356,775.86
  4. Step 4: Simplify right side
    655,121.96x = 322,556,911,905.58
  5. Step 5: Solve for x
    x = 322,556,911,905.58/655,121.96
  6. Step 6: Final answer
    x = 492,361.63

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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.