Home / 1,125,410.90-1,553,214.89-641,865.20

Finding the Fourth Proportional to 1,125,410.90, 1,553,214.89 and 641,865.20

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Solution

The fourth proportional to 1,125,410.90, 1,553,214.89 and 641,865.20 is: 885,858.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,410.90 : 1,553,214.89 = 641,865.20 : x
  2. Step 2: Convert to fraction form
    1,125,410.90/1,553,214.89 = 641,865.20/x
  3. Step 3: Cross multiply
    1,125,410.90x = 1,553,214.89 × 641,865.20
  4. Step 4: Simplify right side
    1,125,410.90x = 996,954,575,037.43
  5. Step 5: Solve for x
    x = 996,954,575,037.43/1,125,410.90
  6. Step 6: Final answer
    x = 885,858.29

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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.