Home / 879,187.85-1,318,767.37-280,140.90

Finding the Fourth Proportional to 879,187.85, 1,318,767.37 and 280,140.90

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Solution

The fourth proportional to 879,187.85, 1,318,767.37 and 280,140.90 is: 420,206.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,187.85 : 1,318,767.37 = 280,140.90 : x
  2. Step 2: Convert to fraction form
    879,187.85/1,318,767.37 = 280,140.90/x
  3. Step 3: Cross multiply
    879,187.85x = 1,318,767.37 × 280,140.90
  4. Step 4: Simplify right side
    879,187.85x = 369,440,677,222.08
  5. Step 5: Solve for x
    x = 369,440,677,222.08/879,187.85
  6. Step 6: Final answer
    x = 420,206.76

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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.