Home / 1,290,394.91-1,935,467.20-391,844.42

Finding the Fourth Proportional to 1,290,394.91, 1,935,467.20 and 391,844.42

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Solution

The fourth proportional to 1,290,394.91, 1,935,467.20 and 391,844.42 is: 587,728.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,394.91 : 1,935,467.20 = 391,844.42 : x
  2. Step 2: Convert to fraction form
    1,290,394.91/1,935,467.20 = 391,844.42/x
  3. Step 3: Cross multiply
    1,290,394.91x = 1,935,467.20 × 391,844.42
  4. Step 4: Simplify right side
    1,290,394.91x = 758,402,022,413.02
  5. Step 5: Solve for x
    x = 758,402,022,413.02/1,290,394.91
  6. Step 6: Final answer
    x = 587,728.62

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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.