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Finding the Fourth Proportional to 555,421.41, 766,477.14 and 300,772.60

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Solution

The fourth proportional to 555,421.41, 766,477.14 and 300,772.60 is: 415,063.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,421.41 : 766,477.14 = 300,772.60 : x
  2. Step 2: Convert to fraction form
    555,421.41/766,477.14 = 300,772.60/x
  3. Step 3: Cross multiply
    555,421.41x = 766,477.14 × 300,772.60
  4. Step 4: Simplify right side
    555,421.41x = 230,535,322,238.36
  5. Step 5: Solve for x
    x = 230,535,322,238.36/555,421.41
  6. Step 6: Final answer
    x = 415,063.80

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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.