Home / 989,078.40-1,483,860.60-279,097.20

Finding the Fourth Proportional to 989,078.40, 1,483,860.60 and 279,097.20

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Solution

The fourth proportional to 989,078.40, 1,483,860.60 and 279,097.20 is: 418,714.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,078.40 : 1,483,860.60 = 279,097.20 : x
  2. Step 2: Convert to fraction form
    989,078.40/1,483,860.60 = 279,097.20/x
  3. Step 3: Cross multiply
    989,078.40x = 1,483,860.60 × 279,097.20
  4. Step 4: Simplify right side
    989,078.40x = 414,141,338,650.32
  5. Step 5: Solve for x
    x = 414,141,338,650.32/989,078.40
  6. Step 6: Final answer
    x = 418,714.37

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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.