Home / 990,037.25-1,366,868.46-680,472.87

Finding the Fourth Proportional to 990,037.25, 1,366,868.46 and 680,472.87

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Solution

The fourth proportional to 990,037.25, 1,366,868.46 and 680,472.87 is: 939,476.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,037.25 : 1,366,868.46 = 680,472.87 : x
  2. Step 2: Convert to fraction form
    990,037.25/1,366,868.46 = 680,472.87/x
  3. Step 3: Cross multiply
    990,037.25x = 1,366,868.46 × 680,472.87
  4. Step 4: Simplify right side
    990,037.25x = 930,116,898,755.52
  5. Step 5: Solve for x
    x = 930,116,898,755.52/990,037.25
  6. Step 6: Final answer
    x = 939,476.67

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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.