Home / 818,768,332.82-1,228,705,106.65-320,717,070.20

Finding the Fourth Proportional to 818,768,332.82, 1,228,705,106.65 and 320,717,070.20

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Solution

The fourth proportional to 818,768,332.82, 1,228,705,106.65 and 320,717,070.20 is: 481,292,065.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,768,332.82 : 1,228,705,106.65 = 320,717,070.20 : x
  2. Step 2: Convert to fraction form
    818,768,332.82/1,228,705,106.65 = 320,717,070.20/x
  3. Step 3: Cross multiply
    818,768,332.82x = 1,228,705,106.65 × 320,717,070.20
  4. Step 4: Simplify right side
    818,768,332.82x = 394,066,701,946,836,480
  5. Step 5: Solve for x
    x = 394,066,701,946,836,480/818,768,332.82
  6. Step 6: Final answer
    x = 481,292,065.35

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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.