Home / 513,922,188.33-709,213,519.56-278,973,007.98

Finding the Fourth Proportional to 513,922,188.33, 709,213,519.56 and 278,973,007.98

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Solution

The fourth proportional to 513,922,188.33, 709,213,519.56 and 278,973,007.98 is: 384,983,239.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,922,188.33 : 709,213,519.56 = 278,973,007.98 : x
  2. Step 2: Convert to fraction form
    513,922,188.33/709,213,519.56 = 278,973,007.98/x
  3. Step 3: Cross multiply
    513,922,188.33x = 709,213,519.56 × 278,973,007.98
  4. Step 4: Simplify right side
    513,922,188.33x = 197,851,428,851,735,776
  5. Step 5: Solve for x
    x = 197,851,428,851,735,776/513,922,188.33
  6. Step 6: Final answer
    x = 384,983,239.38

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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.