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Finding the Fourth Proportional to 855,570.56, 1,283,422.08 and 286,954.88

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Solution

The fourth proportional to 855,570.56, 1,283,422.08 and 286,954.88 is: 430,454.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,570.56 : 1,283,422.08 = 286,954.88 : x
  2. Step 2: Convert to fraction form
    855,570.56/1,283,422.08 = 286,954.88/x
  3. Step 3: Cross multiply
    855,570.56x = 1,283,422.08 × 286,954.88
  4. Step 4: Simplify right side
    855,570.56x = 368,284,228,955.75
  5. Step 5: Solve for x
    x = 368,284,228,955.75/855,570.56
  6. Step 6: Final answer
    x = 430,454.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.