Home / 879,680.10-1,317,964.95-780,147.30

Finding the Fourth Proportional to 879,680.10, 1,317,964.95 and 780,147.30

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Solution

The fourth proportional to 879,680.10, 1,317,964.95 and 780,147.30 is: 1,168,841.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,680.10 : 1,317,964.95 = 780,147.30 : x
  2. Step 2: Convert to fraction form
    879,680.10/1,317,964.95 = 780,147.30/x
  3. Step 3: Cross multiply
    879,680.10x = 1,317,964.95 × 780,147.30
  4. Step 4: Simplify right side
    879,680.10x = 1,028,206,797,237.14
  5. Step 5: Solve for x
    x = 1,028,206,797,237.14/879,680.10
  6. Step 6: Final answer
    x = 1,168,841.72

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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.