Home / 993,611.37-1,370,529.75-717,509.43

Finding the Fourth Proportional to 993,611.37, 1,370,529.75 and 717,509.43

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Solution

The fourth proportional to 993,611.37, 1,370,529.75 and 717,509.43 is: 989,690.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,611.37 : 1,370,529.75 = 717,509.43 : x
  2. Step 2: Convert to fraction form
    993,611.37/1,370,529.75 = 717,509.43/x
  3. Step 3: Cross multiply
    993,611.37x = 1,370,529.75 × 717,509.43
  4. Step 4: Simplify right side
    993,611.37x = 983,368,009,280.35
  5. Step 5: Solve for x
    x = 983,368,009,280.35/993,611.37
  6. Step 6: Final answer
    x = 989,690.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.