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Finding the Fourth Proportional to 996,720, 1,375,600.32 and 657,893.76

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Solution

The fourth proportional to 996,720, 1,375,600.32 and 657,893.76 is: 907,977.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    996,720 : 1,375,600.32 = 657,893.76 : x
  2. Step 2: Convert to fraction form
    996,720/1,375,600.32 = 657,893.76/x
  3. Step 3: Cross multiply
    996,720x = 1,375,600.32 × 657,893.76
  4. Step 4: Simplify right side
    996,720x = 904,998,866,782.00
  5. Step 5: Solve for x
    x = 904,998,866,782.00/996,720
  6. Step 6: Final answer
    x = 907,977.03

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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.