Home / 762,667.30-1,145,130.90-426,379.60

Finding the Fourth Proportional to 762,667.30, 1,145,130.90 and 426,379.60

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Solution

The fourth proportional to 762,667.30, 1,145,130.90 and 426,379.60 is: 640,201.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,667.30 : 1,145,130.90 = 426,379.60 : x
  2. Step 2: Convert to fraction form
    762,667.30/1,145,130.90 = 426,379.60/x
  3. Step 3: Cross multiply
    762,667.30x = 1,145,130.90 × 426,379.60
  4. Step 4: Simplify right side
    762,667.30x = 488,260,455,089.64
  5. Step 5: Solve for x
    x = 488,260,455,089.64/762,667.30
  6. Step 6: Final answer
    x = 640,201.11

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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.