Home / 1,010,485.80-1,515,728.70-691,621.20

Finding the Fourth Proportional to 1,010,485.80, 1,515,728.70 and 691,621.20

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Solution

The fourth proportional to 1,010,485.80, 1,515,728.70 and 691,621.20 is: 1,037,431.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010,485.80 : 1,515,728.70 = 691,621.20 : x
  2. Step 2: Convert to fraction form
    1,010,485.80/1,515,728.70 = 691,621.20/x
  3. Step 3: Cross multiply
    1,010,485.80x = 1,515,728.70 × 691,621.20
  4. Step 4: Simplify right side
    1,010,485.80x = 1,048,310,102,368.44
  5. Step 5: Solve for x
    x = 1,048,310,102,368.44/1,010,485.80
  6. Step 6: Final answer
    x = 1,037,431.80

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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.