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Finding the Fourth Proportional to 560,921.28, 774,040.68 and 306,266.64

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Solution

The fourth proportional to 560,921.28, 774,040.68 and 306,266.64 is: 422,631.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,921.28 : 774,040.68 = 306,266.64 : x
  2. Step 2: Convert to fraction form
    560,921.28/774,040.68 = 306,266.64/x
  3. Step 3: Cross multiply
    560,921.28x = 774,040.68 × 306,266.64
  4. Step 4: Simplify right side
    560,921.28x = 237,062,838,286.92
  5. Step 5: Solve for x
    x = 237,062,838,286.92/560,921.28
  6. Step 6: Final answer
    x = 422,631.21

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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.