Home / 910,236,786.09-1,256,128,948.31-492,553,553.37

Finding the Fourth Proportional to 910,236,786.09, 1,256,128,948.31 and 492,553,553.37

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Solution

The fourth proportional to 910,236,786.09, 1,256,128,948.31 and 492,553,553.37 is: 679,725,085.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,236,786.09 : 1,256,128,948.31 = 492,553,553.37 : x
  2. Step 2: Convert to fraction form
    910,236,786.09/1,256,128,948.31 = 492,553,553.37/x
  3. Step 3: Cross multiply
    910,236,786.09x = 1,256,128,948.31 × 492,553,553.37
  4. Step 4: Simplify right side
    910,236,786.09x = 618,710,776,978,548,864
  5. Step 5: Solve for x
    x = 618,710,776,978,548,864/910,236,786.09
  6. Step 6: Final answer
    x = 679,725,085.20

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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.