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Finding the Fourth Proportional to 605,191.81, 905,259.42 and 425,264.58

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Solution

The fourth proportional to 605,191.81, 905,259.42 and 425,264.58 is: 636,120.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,191.81 : 905,259.42 = 425,264.58 : x
  2. Step 2: Convert to fraction form
    605,191.81/905,259.42 = 425,264.58/x
  3. Step 3: Cross multiply
    605,191.81x = 905,259.42 × 425,264.58
  4. Step 4: Simplify right side
    605,191.81x = 384,974,767,037.34
  5. Step 5: Solve for x
    x = 384,974,767,037.34/605,191.81
  6. Step 6: Final answer
    x = 636,120.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.