Home / 2,116,985.84-3,174,475.44-820,743.92

Finding the Fourth Proportional to 2,116,985.84, 3,174,475.44 and 820,743.92

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Solution

The fourth proportional to 2,116,985.84, 3,174,475.44 and 820,743.92 is: 1,230,726.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116,985.84 : 3,174,475.44 = 820,743.92 : x
  2. Step 2: Convert to fraction form
    2,116,985.84/3,174,475.44 = 820,743.92/x
  3. Step 3: Cross multiply
    2,116,985.84x = 3,174,475.44 × 820,743.92
  4. Step 4: Simplify right side
    2,116,985.84x = 2,605,431,416,569.32
  5. Step 5: Solve for x
    x = 2,605,431,416,569.32/2,116,985.84
  6. Step 6: Final answer
    x = 1,230,726.90

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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.