Home / 839,809,791.20-1,259,714,686.80-513,292,440.80

Finding the Fourth Proportional to 839,809,791.20, 1,259,714,686.80 and 513,292,440.80

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Solution

The fourth proportional to 839,809,791.20, 1,259,714,686.80 and 513,292,440.80 is: 769,938,661.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,809,791.20 : 1,259,714,686.80 = 513,292,440.80 : x
  2. Step 2: Convert to fraction form
    839,809,791.20/1,259,714,686.80 = 513,292,440.80/x
  3. Step 3: Cross multiply
    839,809,791.20x = 1,259,714,686.80 × 513,292,440.80
  4. Step 4: Simplify right side
    839,809,791.20x = 646,602,026,299,179,520
  5. Step 5: Solve for x
    x = 646,602,026,299,179,520/839,809,791.20
  6. Step 6: Final answer
    x = 769,938,661.20

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Double scale
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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.