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Finding the Fourth Proportional to 555,840.30, 766,763.80 and 338,115.54

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Solution

The fourth proportional to 555,840.30, 766,763.80 and 338,115.54 is: 466,419.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,840.30 : 766,763.80 = 338,115.54 : x
  2. Step 2: Convert to fraction form
    555,840.30/766,763.80 = 338,115.54/x
  3. Step 3: Cross multiply
    555,840.30x = 766,763.80 × 338,115.54
  4. Step 4: Simplify right side
    555,840.30x = 259,254,756,289.45
  5. Step 5: Solve for x
    x = 259,254,756,289.45/555,840.30
  6. Step 6: Final answer
    x = 466,419.50

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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.