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Finding the Fourth Proportional to 554,647.91, 765,413.55 and 299,998.49

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Solution

The fourth proportional to 554,647.91, 765,413.55 and 299,998.49 is: 413,997.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,647.91 : 765,413.55 = 299,998.49 : x
  2. Step 2: Convert to fraction form
    554,647.91/765,413.55 = 299,998.49/x
  3. Step 3: Cross multiply
    554,647.91x = 765,413.55 × 299,998.49
  4. Step 4: Simplify right side
    554,647.91x = 229,622,905,398.47
  5. Step 5: Solve for x
    x = 229,622,905,398.47/554,647.91
  6. Step 6: Final answer
    x = 413,997.61

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Similar ratio
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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.