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Finding the Fourth Proportional to 425,322.34, 637,983.51 and 125,779.59

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Solution

The fourth proportional to 425,322.34, 637,983.51 and 125,779.59 is: 188,669.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,322.34 : 637,983.51 = 125,779.59 : x
  2. Step 2: Convert to fraction form
    425,322.34/637,983.51 = 125,779.59/x
  3. Step 3: Cross multiply
    425,322.34x = 637,983.51 × 125,779.59
  4. Step 4: Simplify right side
    425,322.34x = 80,245,304,314.56
  5. Step 5: Solve for x
    x = 80,245,304,314.56/425,322.34
  6. Step 6: Final answer
    x = 188,669.39

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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.