Home / 1,392,353.43-1,921,413.03-772,155

Finding the Fourth Proportional to 1,392,353.43, 1,921,413.03 and 772,155

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Solution

The fourth proportional to 1,392,353.43, 1,921,413.03 and 772,155 is: 1,065,554.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,353.43 : 1,921,413.03 = 772,155 : x
  2. Step 2: Convert to fraction form
    1,392,353.43/1,921,413.03 = 772,155/x
  3. Step 3: Cross multiply
    1,392,353.43x = 1,921,413.03 × 772,155
  4. Step 4: Simplify right side
    1,392,353.43x = 1,483,628,678,179.65
  5. Step 5: Solve for x
    x = 1,483,628,678,179.65/1,392,353.43
  6. Step 6: Final answer
    x = 1,065,554.65

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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.