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Finding the Fourth Proportional to 560,785.75, 773,887.58 and 306,139.57

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Solution

The fourth proportional to 560,785.75, 773,887.58 and 306,139.57 is: 422,474.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,785.75 : 773,887.58 = 306,139.57 : x
  2. Step 2: Convert to fraction form
    560,785.75/773,887.58 = 306,139.57/x
  3. Step 3: Cross multiply
    560,785.75x = 773,887.58 × 306,139.57
  4. Step 4: Simplify right side
    560,785.75x = 236,917,610,969.54
  5. Step 5: Solve for x
    x = 236,917,610,969.54/560,785.75
  6. Step 6: Final answer
    x = 422,474.38

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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.