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Finding the Fourth Proportional to 555,410.25, 766,466.55 and 300,761.64

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Solution

The fourth proportional to 555,410.25, 766,466.55 and 300,761.64 is: 415,051.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,410.25 : 766,466.55 = 300,761.64 : x
  2. Step 2: Convert to fraction form
    555,410.25/766,466.55 = 300,761.64/x
  3. Step 3: Cross multiply
    555,410.25x = 766,466.55 × 300,761.64
  4. Step 4: Simplify right side
    555,410.25x = 230,523,736,583.14
  5. Step 5: Solve for x
    x = 230,523,736,583.14/555,410.25
  6. Step 6: Final answer
    x = 415,051.28

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Double scale
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1.5x scale

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.