Home / 1,111,101.23-1,666,750.30-312,389.73

Finding the Fourth Proportional to 1,111,101.23, 1,666,750.30 and 312,389.73

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Solution

The fourth proportional to 1,111,101.23, 1,666,750.30 and 312,389.73 is: 468,612.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111,101.23 : 1,666,750.30 = 312,389.73 : x
  2. Step 2: Convert to fraction form
    1,111,101.23/1,666,750.30 = 312,389.73/x
  3. Step 3: Cross multiply
    1,111,101.23x = 1,666,750.30 × 312,389.73
  4. Step 4: Simplify right side
    1,111,101.23x = 520,675,675,413.45
  5. Step 5: Solve for x
    x = 520,675,675,413.45/1,111,101.23
  6. Step 6: Final answer
    x = 468,612.27

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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.