Home / 1,259,256,031.20-1,888,884,046.80-647,035,999.20

Finding the Fourth Proportional to 1,259,256,031.20, 1,888,884,046.80 and 647,035,999.20

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Solution

The fourth proportional to 1,259,256,031.20, 1,888,884,046.80 and 647,035,999.20 is: 970,553,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,256,031.20 : 1,888,884,046.80 = 647,035,999.20 : x
  2. Step 2: Convert to fraction form
    1,259,256,031.20/1,888,884,046.80 = 647,035,999.20/x
  3. Step 3: Cross multiply
    1,259,256,031.20x = 1,888,884,046.80 × 647,035,999.20
  4. Step 4: Simplify right side
    1,259,256,031.20x = 1,222,175,976,594,177,536
  5. Step 5: Solve for x
    x = 1,222,175,976,594,177,536/1,259,256,031.20
  6. Step 6: Final answer
    x = 970,553,998.80

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.