Home / 1,132,128.36-1,561,955.40-642,044.88

Finding the Fourth Proportional to 1,132,128.36, 1,561,955.40 and 642,044.88

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Solution

The fourth proportional to 1,132,128.36, 1,561,955.40 and 642,044.88 is: 885,805.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132,128.36 : 1,561,955.40 = 642,044.88 : x
  2. Step 2: Convert to fraction form
    1,132,128.36/1,561,955.40 = 642,044.88/x
  3. Step 3: Cross multiply
    1,132,128.36x = 1,561,955.40 × 642,044.88
  4. Step 4: Simplify right side
    1,132,128.36x = 1,002,845,467,358.35
  5. Step 5: Solve for x
    x = 1,002,845,467,358.35/1,132,128.36
  6. Step 6: Final answer
    x = 885,805.45

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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.