Home / 1,125,467.39-1,553,292.90-641,921.69

Finding the Fourth Proportional to 1,125,467.39, 1,553,292.90 and 641,921.69

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Solution

The fourth proportional to 1,125,467.39, 1,553,292.90 and 641,921.69 is: 885,936.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,467.39 : 1,553,292.90 = 641,921.69 : x
  2. Step 2: Convert to fraction form
    1,125,467.39/1,553,292.90 = 641,921.69/x
  3. Step 3: Cross multiply
    1,125,467.39x = 1,553,292.90 × 641,921.69
  4. Step 4: Simplify right side
    1,125,467.39x = 997,092,395,666.54
  5. Step 5: Solve for x
    x = 997,092,395,666.54/1,125,467.39
  6. Step 6: Final answer
    x = 885,936.29

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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.