Home / 679,866.98-1,019,916.65-280,289.32

Finding the Fourth Proportional to 679,866.98, 1,019,916.65 and 280,289.32

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Solution

The fourth proportional to 679,866.98, 1,019,916.65 and 280,289.32 is: 420,481.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,866.98 : 1,019,916.65 = 280,289.32 : x
  2. Step 2: Convert to fraction form
    679,866.98/1,019,916.65 = 280,289.32/x
  3. Step 3: Cross multiply
    679,866.98x = 1,019,916.65 × 280,289.32
  4. Step 4: Simplify right side
    679,866.98x = 285,871,740,333.94
  5. Step 5: Solve for x
    x = 285,871,740,333.94/679,866.98
  6. Step 6: Final answer
    x = 420,481.87

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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.