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Finding the Fourth Proportional to 575,864.72, 794,692.88 and 321,215.84

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Solution

The fourth proportional to 575,864.72, 794,692.88 and 321,215.84 is: 443,277.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,864.72 : 794,692.88 = 321,215.84 : x
  2. Step 2: Convert to fraction form
    575,864.72/794,692.88 = 321,215.84/x
  3. Step 3: Cross multiply
    575,864.72x = 794,692.88 × 321,215.84
  4. Step 4: Simplify right side
    575,864.72x = 255,267,940,991.22
  5. Step 5: Solve for x
    x = 255,267,940,991.22/575,864.72
  6. Step 6: Final answer
    x = 443,277.62

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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.