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Finding the Fourth Proportional to 561,030.30, 774,227.97 and 306,388.98

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Solution

The fourth proportional to 561,030.30, 774,227.97 and 306,388.98 is: 422,820.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,030.30 : 774,227.97 = 306,388.98 : x
  2. Step 2: Convert to fraction form
    561,030.30/774,227.97 = 306,388.98/x
  3. Step 3: Cross multiply
    561,030.30x = 774,227.97 × 306,388.98
  4. Step 4: Simplify right side
    561,030.30x = 237,214,918,015.77
  5. Step 5: Solve for x
    x = 237,214,918,015.77/561,030.30
  6. Step 6: Final answer
    x = 422,820.15

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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.