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Finding the Fourth Proportional to 657,629.20, 921,614 and 657,629.20

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Solution

The fourth proportional to 657,629.20, 921,614 and 657,629.20 is: 921,614

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,629.20 : 921,614 = 657,629.20 : x
  2. Step 2: Convert to fraction form
    657,629.20/921,614 = 657,629.20/x
  3. Step 3: Cross multiply
    657,629.20x = 921,614 × 657,629.20
  4. Step 4: Simplify right side
    657,629.20x = 606,080,277,528.80
  5. Step 5: Solve for x
    x = 606,080,277,528.80/657,629.20
  6. Step 6: Final answer
    x = 921,614

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.