Home / 780,140.22-1,170,389.94-330,878.58

Finding the Fourth Proportional to 780,140.22, 1,170,389.94 and 330,878.58

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Solution

The fourth proportional to 780,140.22, 1,170,389.94 and 330,878.58 is: 496,394.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,140.22 : 1,170,389.94 = 330,878.58 : x
  2. Step 2: Convert to fraction form
    780,140.22/1,170,389.94 = 330,878.58/x
  3. Step 3: Cross multiply
    780,140.22x = 1,170,389.94 × 330,878.58
  4. Step 4: Simplify right side
    780,140.22x = 387,256,961,393.49
  5. Step 5: Solve for x
    x = 387,256,961,393.49/780,140.22
  6. Step 6: Final answer
    x = 496,394.05

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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.