Home / 779,121.60-1,168,682.40-685,809.60

Finding the Fourth Proportional to 779,121.60, 1,168,682.40 and 685,809.60

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Solution

The fourth proportional to 779,121.60, 1,168,682.40 and 685,809.60 is: 1,028,714.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,121.60 : 1,168,682.40 = 685,809.60 : x
  2. Step 2: Convert to fraction form
    779,121.60/1,168,682.40 = 685,809.60/x
  3. Step 3: Cross multiply
    779,121.60x = 1,168,682.40 × 685,809.60
  4. Step 4: Simplify right side
    779,121.60x = 801,493,609,271.04
  5. Step 5: Solve for x
    x = 801,493,609,271.04/779,121.60
  6. Step 6: Final answer
    x = 1,028,714.40

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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.