Home / 1,685,420.18-2,325,879.89-921,473.78

Finding the Fourth Proportional to 1,685,420.18, 2,325,879.89 and 921,473.78

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Solution

The fourth proportional to 1,685,420.18, 2,325,879.89 and 921,473.78 is: 1,271,633.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685,420.18 : 2,325,879.89 = 921,473.78 : x
  2. Step 2: Convert to fraction form
    1,685,420.18/2,325,879.89 = 921,473.78/x
  3. Step 3: Cross multiply
    1,685,420.18x = 2,325,879.89 × 921,473.78
  4. Step 4: Simplify right side
    1,685,420.18x = 2,143,237,334,064.28
  5. Step 5: Solve for x
    x = 2,143,237,334,064.28/1,685,420.18
  6. Step 6: Final answer
    x = 1,271,633.84

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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.