Home / 989,112.90-1,483,669.35-867,078.30

Finding the Fourth Proportional to 989,112.90, 1,483,669.35 and 867,078.30

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Solution

The fourth proportional to 989,112.90, 1,483,669.35 and 867,078.30 is: 1,300,617.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,112.90 : 1,483,669.35 = 867,078.30 : x
  2. Step 2: Convert to fraction form
    989,112.90/1,483,669.35 = 867,078.30/x
  3. Step 3: Cross multiply
    989,112.90x = 1,483,669.35 × 867,078.30
  4. Step 4: Simplify right side
    989,112.90x = 1,286,457,497,760.11
  5. Step 5: Solve for x
    x = 1,286,457,497,760.11/989,112.90
  6. Step 6: Final answer
    x = 1,300,617.45

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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.