Home / 878,464.80-1,316,919.60-783,986.40

Finding the Fourth Proportional to 878,464.80, 1,316,919.60 and 783,986.40

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Solution

The fourth proportional to 878,464.80, 1,316,919.60 and 783,986.40 is: 1,175,285.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,464.80 : 1,316,919.60 = 783,986.40 : x
  2. Step 2: Convert to fraction form
    878,464.80/1,316,919.60 = 783,986.40/x
  3. Step 3: Cross multiply
    878,464.80x = 1,316,919.60 × 783,986.40
  4. Step 4: Simplify right side
    878,464.80x = 1,032,447,056,293.44
  5. Step 5: Solve for x
    x = 1,032,447,056,293.44/878,464.80
  6. Step 6: Final answer
    x = 1,175,285.63

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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.