Home / 989,813.70-1,484,720.55-740,981.70

Finding the Fourth Proportional to 989,813.70, 1,484,720.55 and 740,981.70

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Solution

The fourth proportional to 989,813.70, 1,484,720.55 and 740,981.70 is: 1,111,472.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,813.70 : 1,484,720.55 = 740,981.70 : x
  2. Step 2: Convert to fraction form
    989,813.70/1,484,720.55 = 740,981.70/x
  3. Step 3: Cross multiply
    989,813.70x = 1,484,720.55 × 740,981.70
  4. Step 4: Simplify right side
    989,813.70x = 1,100,150,757,163.94
  5. Step 5: Solve for x
    x = 1,100,150,757,163.94/989,813.70
  6. Step 6: Final answer
    x = 1,111,472.55

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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.