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Finding the Fourth Proportional to 550,064.67, 759,091.98 and 320,780.96

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Solution

The fourth proportional to 550,064.67, 759,091.98 and 320,780.96 is: 442,679.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,064.67 : 759,091.98 = 320,780.96 : x
  2. Step 2: Convert to fraction form
    550,064.67/759,091.98 = 320,780.96/x
  3. Step 3: Cross multiply
    550,064.67x = 759,091.98 × 320,780.96
  4. Step 4: Simplify right side
    550,064.67x = 243,502,253,424.57
  5. Step 5: Solve for x
    x = 243,502,253,424.57/550,064.67
  6. Step 6: Final answer
    x = 442,679.32

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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.