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Finding the Fourth Proportional to 655,892.31, 905,133.27 and 380,303.58

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Solution

The fourth proportional to 655,892.31, 905,133.27 and 380,303.58 is: 524,820.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,892.31 : 905,133.27 = 380,303.58 : x
  2. Step 2: Convert to fraction form
    655,892.31/905,133.27 = 380,303.58/x
  3. Step 3: Cross multiply
    655,892.31x = 905,133.27 × 380,303.58
  4. Step 4: Simplify right side
    655,892.31x = 344,225,422,958.11
  5. Step 5: Solve for x
    x = 344,225,422,958.11/655,892.31
  6. Step 6: Final answer
    x = 524,820.03

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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.