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Finding the Fourth Proportional to 655,840.63, 905,124.62 and 383,892.04

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Solution

The fourth proportional to 655,840.63, 905,124.62 and 383,892.04 is: 529,808.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,840.63 : 905,124.62 = 383,892.04 : x
  2. Step 2: Convert to fraction form
    655,840.63/905,124.62 = 383,892.04/x
  3. Step 3: Cross multiply
    655,840.63x = 905,124.62 × 383,892.04
  4. Step 4: Simplify right side
    655,840.63x = 347,470,136,826.03
  5. Step 5: Solve for x
    x = 347,470,136,826.03/655,840.63
  6. Step 6: Final answer
    x = 529,808.80

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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.