Home / 989,679.81-1,478,379.20-717,648.44

Finding the Fourth Proportional to 989,679.81, 1,478,379.20 and 717,648.44

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Solution

The fourth proportional to 989,679.81, 1,478,379.20 and 717,648.44 is: 1,072,019.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,679.81 : 1,478,379.20 = 717,648.44 : x
  2. Step 2: Convert to fraction form
    989,679.81/1,478,379.20 = 717,648.44/x
  3. Step 3: Cross multiply
    989,679.81x = 1,478,379.20 × 717,648.44
  4. Step 4: Simplify right side
    989,679.81x = 1,060,956,530,181.11
  5. Step 5: Solve for x
    x = 1,060,956,530,181.11/989,679.81
  6. Step 6: Final answer
    x = 1,072,019.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.