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Finding the Fourth Proportional to 1,640,273.55, 2,455,981.65 and 1,640,273.55

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Solution

The fourth proportional to 1,640,273.55, 2,455,981.65 and 1,640,273.55 is: 2,455,981.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640,273.55 : 2,455,981.65 = 1,640,273.55 : x
  2. Step 2: Convert to fraction form
    1,640,273.55/2,455,981.65 = 1,640,273.55/x
  3. Step 3: Cross multiply
    1,640,273.55x = 2,455,981.65 × 1,640,273.55
  4. Step 4: Simplify right side
    1,640,273.55x = 4,028,481,739,780.36
  5. Step 5: Solve for x
    x = 4,028,481,739,780.36/1,640,273.55
  6. Step 6: Final answer
    x = 2,455,981.65

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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.