Home / 1,242,003.20-1,863,004.80-355,539.20

Finding the Fourth Proportional to 1,242,003.20, 1,863,004.80 and 355,539.20

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Solution

The fourth proportional to 1,242,003.20, 1,863,004.80 and 355,539.20 is: 533,308.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,003.20 : 1,863,004.80 = 355,539.20 : x
  2. Step 2: Convert to fraction form
    1,242,003.20/1,863,004.80 = 355,539.20/x
  3. Step 3: Cross multiply
    1,242,003.20x = 1,863,004.80 × 355,539.20
  4. Step 4: Simplify right side
    1,242,003.20x = 662,371,236,188.16
  5. Step 5: Solve for x
    x = 662,371,236,188.16/1,242,003.20
  6. Step 6: Final answer
    x = 533,308.80

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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.