Home / 1,274,415.27-1,911,345.60-421,285.37

Finding the Fourth Proportional to 1,274,415.27, 1,911,345.60 and 421,285.37

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Solution

The fourth proportional to 1,274,415.27, 1,911,345.60 and 421,285.37 is: 631,836.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,274,415.27 : 1,911,345.60 = 421,285.37 : x
  2. Step 2: Convert to fraction form
    1,274,415.27/1,911,345.60 = 421,285.37/x
  3. Step 3: Cross multiply
    1,274,415.27x = 1,911,345.60 × 421,285.37
  4. Step 4: Simplify right side
    1,274,415.27x = 805,221,928,737.14
  5. Step 5: Solve for x
    x = 805,221,928,737.14/1,274,415.27
  6. Step 6: Final answer
    x = 631,836.38

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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.