Home / 988,980.40-1,483,713.60-278,999.20

Finding the Fourth Proportional to 988,980.40, 1,483,713.60 and 278,999.20

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Solution

The fourth proportional to 988,980.40, 1,483,713.60 and 278,999.20 is: 418,567.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,980.40 : 1,483,713.60 = 278,999.20 : x
  2. Step 2: Convert to fraction form
    988,980.40/1,483,713.60 = 278,999.20/x
  3. Step 3: Cross multiply
    988,980.40x = 1,483,713.60 × 278,999.20
  4. Step 4: Simplify right side
    988,980.40x = 413,954,907,429.12
  5. Step 5: Solve for x
    x = 413,954,907,429.12/988,980.40
  6. Step 6: Final answer
    x = 418,567.35

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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.