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Finding the Fourth Proportional to 1,191,970, 1,644,918.60 and 655,426

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Solution

The fourth proportional to 1,191,970, 1,644,918.60 and 655,426 is: 904,487.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,970 : 1,644,918.60 = 655,426 : x
  2. Step 2: Convert to fraction form
    1,191,970/1,644,918.60 = 655,426/x
  3. Step 3: Cross multiply
    1,191,970x = 1,644,918.60 × 655,426
  4. Step 4: Simplify right side
    1,191,970x = 1,078,122,418,323.60
  5. Step 5: Solve for x
    x = 1,078,122,418,323.60/1,191,970
  6. Step 6: Final answer
    x = 904,487.88

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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.