Home / 1,079,000.10-1,618,500.15-680,091.30

Finding the Fourth Proportional to 1,079,000.10, 1,618,500.15 and 680,091.30

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Solution

The fourth proportional to 1,079,000.10, 1,618,500.15 and 680,091.30 is: 1,020,136.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,000.10 : 1,618,500.15 = 680,091.30 : x
  2. Step 2: Convert to fraction form
    1,079,000.10/1,618,500.15 = 680,091.30/x
  3. Step 3: Cross multiply
    1,079,000.10x = 1,618,500.15 × 680,091.30
  4. Step 4: Simplify right side
    1,079,000.10x = 1,100,727,871,063.70
  5. Step 5: Solve for x
    x = 1,100,727,871,063.70/1,079,000.10
  6. Step 6: Final answer
    x = 1,020,136.95

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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.