Home / 989,129.10-1,483,486.03-278,991.06

Finding the Fourth Proportional to 989,129.10, 1,483,486.03 and 278,991.06

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Solution

The fourth proportional to 989,129.10, 1,483,486.03 and 278,991.06 is: 418,428.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,129.10 : 1,483,486.03 = 278,991.06 : x
  2. Step 2: Convert to fraction form
    989,129.10/1,483,486.03 = 278,991.06/x
  3. Step 3: Cross multiply
    989,129.10x = 1,483,486.03 × 278,991.06
  4. Step 4: Simplify right side
    989,129.10x = 413,879,340,004.89
  5. Step 5: Solve for x
    x = 413,879,340,004.89/989,129.10
  6. Step 6: Final answer
    x = 418,428.03

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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.