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Finding the Fourth Proportional to 561,560.24, 774,951.28 and 306,911.36

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Solution

The fourth proportional to 561,560.24, 774,951.28 and 306,911.36 is: 423,536.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,560.24 : 774,951.28 = 306,911.36 : x
  2. Step 2: Convert to fraction form
    561,560.24/774,951.28 = 306,911.36/x
  3. Step 3: Cross multiply
    561,560.24x = 774,951.28 × 306,911.36
  4. Step 4: Simplify right side
    561,560.24x = 237,841,351,278.54
  5. Step 5: Solve for x
    x = 237,841,351,278.54/561,560.24
  6. Step 6: Final answer
    x = 423,536.67

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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.