Home / 679,866.60-1,019,916.08-280,288.94

Finding the Fourth Proportional to 679,866.60, 1,019,916.08 and 280,288.94

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Solution

The fourth proportional to 679,866.60, 1,019,916.08 and 280,288.94 is: 420,481.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,866.60 : 1,019,916.08 = 280,288.94 : x
  2. Step 2: Convert to fraction form
    679,866.60/1,019,916.08 = 280,288.94/x
  3. Step 3: Cross multiply
    679,866.60x = 1,019,916.08 × 280,288.94
  4. Step 4: Simplify right side
    679,866.60x = 285,871,198,027.55
  5. Step 5: Solve for x
    x = 285,871,198,027.55/679,866.60
  6. Step 6: Final answer
    x = 420,481.31

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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.