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Finding the Fourth Proportional to 1,571,415, 2,168,552.70 and 856,023

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Solution

The fourth proportional to 1,571,415, 2,168,552.70 and 856,023 is: 1,181,311.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571,415 : 2,168,552.70 = 856,023 : x
  2. Step 2: Convert to fraction form
    1,571,415/2,168,552.70 = 856,023/x
  3. Step 3: Cross multiply
    1,571,415x = 2,168,552.70 × 856,023
  4. Step 4: Simplify right side
    1,571,415x = 1,856,330,987,912.10
  5. Step 5: Solve for x
    x = 1,856,330,987,912.10/1,571,415
  6. Step 6: Final answer
    x = 1,181,311.74

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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.