Home / 542,045,221.38-813,085,374.78-258,042,708.18

Finding the Fourth Proportional to 542,045,221.38, 813,085,374.78 and 258,042,708.18

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Solution

The fourth proportional to 542,045,221.38, 813,085,374.78 and 258,042,708.18 is: 387,072,413.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,045,221.38 : 813,085,374.78 = 258,042,708.18 : x
  2. Step 2: Convert to fraction form
    542,045,221.38/813,085,374.78 = 258,042,708.18/x
  3. Step 3: Cross multiply
    542,045,221.38x = 813,085,374.78 × 258,042,708.18
  4. Step 4: Simplify right side
    542,045,221.38x = 209,810,752,089,781,472
  5. Step 5: Solve for x
    x = 209,810,752,089,781,472/542,045,221.38
  6. Step 6: Final answer
    x = 387,072,413.54

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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.