Home / 989,129.40-1,483,548.30-279,229.20

Finding the Fourth Proportional to 989,129.40, 1,483,548.30 and 279,229.20

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Solution

The fourth proportional to 989,129.40, 1,483,548.30 and 279,229.20 is: 418,802.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,129.40 : 1,483,548.30 = 279,229.20 : x
  2. Step 2: Convert to fraction form
    989,129.40/1,483,548.30 = 279,229.20/x
  3. Step 3: Cross multiply
    989,129.40x = 1,483,548.30 × 279,229.20
  4. Step 4: Simplify right side
    989,129.40x = 414,250,004,970.36
  5. Step 5: Solve for x
    x = 414,250,004,970.36/989,129.40
  6. Step 6: Final answer
    x = 418,802.64

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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.