Home / 1,640,326.60-2,460,489.90-919,928.80

Finding the Fourth Proportional to 1,640,326.60, 2,460,489.90 and 919,928.80

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Solution

The fourth proportional to 1,640,326.60, 2,460,489.90 and 919,928.80 is: 1,379,893.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640,326.60 : 2,460,489.90 = 919,928.80 : x
  2. Step 2: Convert to fraction form
    1,640,326.60/2,460,489.90 = 919,928.80/x
  3. Step 3: Cross multiply
    1,640,326.60x = 2,460,489.90 × 919,928.80
  4. Step 4: Simplify right side
    1,640,326.60x = 2,263,475,521,119.12
  5. Step 5: Solve for x
    x = 2,263,475,521,119.12/1,640,326.60
  6. Step 6: Final answer
    x = 1,379,893.20

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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.