Home / 2,158,006.40-2,978,120.98-1,178,003.55

Finding the Fourth Proportional to 2,158,006.40, 2,978,120.98 and 1,178,003.55

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Solution

The fourth proportional to 2,158,006.40, 2,978,120.98 and 1,178,003.55 is: 1,625,684.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158,006.40 : 2,978,120.98 = 1,178,003.55 : x
  2. Step 2: Convert to fraction form
    2,158,006.40/2,978,120.98 = 1,178,003.55/x
  3. Step 3: Cross multiply
    2,158,006.40x = 2,978,120.98 × 1,178,003.55
  4. Step 4: Simplify right side
    2,158,006.40x = 3,508,237,092,783.67
  5. Step 5: Solve for x
    x = 3,508,237,092,783.67/2,158,006.40
  6. Step 6: Final answer
    x = 1,625,684.28

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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.