Home / 989,135.30-1,483,495.31-278,997.27

Finding the Fourth Proportional to 989,135.30, 1,483,495.31 and 278,997.27

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Solution

The fourth proportional to 989,135.30, 1,483,495.31 and 278,997.27 is: 418,437.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,135.30 : 1,483,495.31 = 278,997.27 : x
  2. Step 2: Convert to fraction form
    989,135.30/1,483,495.31 = 278,997.27/x
  3. Step 3: Cross multiply
    989,135.30x = 1,483,495.31 × 278,997.27
  4. Step 4: Simplify right side
    989,135.30x = 413,891,140,152.82
  5. Step 5: Solve for x
    x = 413,891,140,152.82/989,135.30
  6. Step 6: Final answer
    x = 418,437.34

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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.