Home / 910,236,789.60-1,256,128,953.14-492,553,556.88

Finding the Fourth Proportional to 910,236,789.60, 1,256,128,953.14 and 492,553,556.88

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Solution

The fourth proportional to 910,236,789.60, 1,256,128,953.14 and 492,553,556.88 is: 679,725,090.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,236,789.60 : 1,256,128,953.14 = 492,553,556.88 : x
  2. Step 2: Convert to fraction form
    910,236,789.60/1,256,128,953.14 = 492,553,556.88/x
  3. Step 3: Cross multiply
    910,236,789.60x = 1,256,128,953.14 × 492,553,556.88
  4. Step 4: Simplify right side
    910,236,789.60x = 618,710,783,769,057,920
  5. Step 5: Solve for x
    x = 618,710,783,769,057,920/910,236,789.60
  6. Step 6: Final answer
    x = 679,725,090.04

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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.