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Finding the Fourth Proportional to 555,422.95, 766,486.02 and 300,774.34

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Solution

The fourth proportional to 555,422.95, 766,486.02 and 300,774.34 is: 415,069.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,422.95 : 766,486.02 = 300,774.34 : x
  2. Step 2: Convert to fraction form
    555,422.95/766,486.02 = 300,774.34/x
  3. Step 3: Cross multiply
    555,422.95x = 766,486.02 × 300,774.34
  4. Step 4: Simplify right side
    555,422.95x = 230,539,326,784.73
  5. Step 5: Solve for x
    x = 230,539,326,784.73/555,422.95
  6. Step 6: Final answer
    x = 415,069.86

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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.