Home / 939,139.56-1,408,413.69-307,905.75

Finding the Fourth Proportional to 939,139.56, 1,408,413.69 and 307,905.75

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Solution

The fourth proportional to 939,139.56, 1,408,413.69 and 307,905.75 is: 461,761.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,139.56 : 1,408,413.69 = 307,905.75 : x
  2. Step 2: Convert to fraction form
    939,139.56/1,408,413.69 = 307,905.75/x
  3. Step 3: Cross multiply
    939,139.56x = 1,408,413.69 × 307,905.75
  4. Step 4: Simplify right side
    939,139.56x = 433,658,673,529.72
  5. Step 5: Solve for x
    x = 433,658,673,529.72/939,139.56
  6. Step 6: Final answer
    x = 461,761.69

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1.5x scale

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.