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Finding the Fourth Proportional to 422,703, 583,389.81 and 261,609.93

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Solution

The fourth proportional to 422,703, 583,389.81 and 261,609.93 is: 361,058.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,703 : 583,389.81 = 261,609.93 : x
  2. Step 2: Convert to fraction form
    422,703/583,389.81 = 261,609.93/x
  3. Step 3: Cross multiply
    422,703x = 583,389.81 × 261,609.93
  4. Step 4: Simplify right side
    422,703x = 152,620,567,356.81
  5. Step 5: Solve for x
    x = 152,620,567,356.81/422,703
  6. Step 6: Final answer
    x = 361,058.63

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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.