Home / 1,640,638.55-2,263,743.09-942,784.40

Finding the Fourth Proportional to 1,640,638.55, 2,263,743.09 and 942,784.40

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Solution

The fourth proportional to 1,640,638.55, 2,263,743.09 and 942,784.40 is: 1,300,848.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640,638.55 : 2,263,743.09 = 942,784.40 : x
  2. Step 2: Convert to fraction form
    1,640,638.55/2,263,743.09 = 942,784.40/x
  3. Step 3: Cross multiply
    1,640,638.55x = 2,263,743.09 × 942,784.40
  4. Step 4: Simplify right side
    1,640,638.55x = 2,134,221,659,541.08
  5. Step 5: Solve for x
    x = 2,134,221,659,541.08/1,640,638.55
  6. Step 6: Final answer
    x = 1,300,848.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.