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Finding the Fourth Proportional to 561,222.12, 774,458.34 and 306,526.44

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Solution

The fourth proportional to 561,222.12, 774,458.34 and 306,526.44 is: 422,991.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,222.12 : 774,458.34 = 306,526.44 : x
  2. Step 2: Convert to fraction form
    561,222.12/774,458.34 = 306,526.44/x
  3. Step 3: Cross multiply
    561,222.12x = 774,458.34 × 306,526.44
  4. Step 4: Simplify right side
    561,222.12x = 237,391,957,888.51
  5. Step 5: Solve for x
    x = 237,391,957,888.51/561,222.12
  6. Step 6: Final answer
    x = 422,991.09

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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.