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Finding the Fourth Proportional to 555,513.20, 766,604.40 and 300,858.56

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Solution

The fourth proportional to 555,513.20, 766,604.40 and 300,858.56 is: 415,182.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,513.20 : 766,604.40 = 300,858.56 : x
  2. Step 2: Convert to fraction form
    555,513.20/766,604.40 = 300,858.56/x
  3. Step 3: Cross multiply
    555,513.20x = 766,604.40 × 300,858.56
  4. Step 4: Simplify right side
    555,513.20x = 230,639,495,873.66
  5. Step 5: Solve for x
    x = 230,639,495,873.66/555,513.20
  6. Step 6: Final answer
    x = 415,182.75

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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.