Home / 640,922.40-961,383.60-303,962.40

Finding the Fourth Proportional to 640,922.40, 961,383.60 and 303,962.40

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Solution

The fourth proportional to 640,922.40, 961,383.60 and 303,962.40 is: 455,943.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,922.40 : 961,383.60 = 303,962.40 : x
  2. Step 2: Convert to fraction form
    640,922.40/961,383.60 = 303,962.40/x
  3. Step 3: Cross multiply
    640,922.40x = 961,383.60 × 303,962.40
  4. Step 4: Simplify right side
    640,922.40x = 292,224,466,376.64
  5. Step 5: Solve for x
    x = 292,224,466,376.64/640,922.40
  6. Step 6: Final answer
    x = 455,943.60

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Similar ratio
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1.5x scale

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.