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Finding the Fourth Proportional to 880,802.20, 1,321,203.30 and 408,410.20

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Solution

The fourth proportional to 880,802.20, 1,321,203.30 and 408,410.20 is: 612,615.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,802.20 : 1,321,203.30 = 408,410.20 : x
  2. Step 2: Convert to fraction form
    880,802.20/1,321,203.30 = 408,410.20/x
  3. Step 3: Cross multiply
    880,802.20x = 1,321,203.30 × 408,410.20
  4. Step 4: Simplify right side
    880,802.20x = 539,592,903,993.66
  5. Step 5: Solve for x
    x = 539,592,903,993.66/880,802.20
  6. Step 6: Final answer
    x = 612,615.30

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Double scale
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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.