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Finding the Fourth Proportional to 389,486.70, 584,230.05 and 326,501.10

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Solution

The fourth proportional to 389,486.70, 584,230.05 and 326,501.10 is: 489,751.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,486.70 : 584,230.05 = 326,501.10 : x
  2. Step 2: Convert to fraction form
    389,486.70/584,230.05 = 326,501.10/x
  3. Step 3: Cross multiply
    389,486.70x = 584,230.05 × 326,501.10
  4. Step 4: Simplify right side
    389,486.70x = 190,751,753,978.06
  5. Step 5: Solve for x
    x = 190,751,753,978.06/389,486.70
  6. Step 6: Final answer
    x = 489,751.65

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.