Home / 780,870.40-1,171,305.60-189,894.40

Finding the Fourth Proportional to 780,870.40, 1,171,305.60 and 189,894.40

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Solution

The fourth proportional to 780,870.40, 1,171,305.60 and 189,894.40 is: 284,841.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,870.40 : 1,171,305.60 = 189,894.40 : x
  2. Step 2: Convert to fraction form
    780,870.40/1,171,305.60 = 189,894.40/x
  3. Step 3: Cross multiply
    780,870.40x = 1,171,305.60 × 189,894.40
  4. Step 4: Simplify right side
    780,870.40x = 222,424,374,128.64
  5. Step 5: Solve for x
    x = 222,424,374,128.64/780,870.40
  6. Step 6: Final answer
    x = 284,841.60

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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.