Home / 718,292,199.06-991,159,003.71-405,007,744.14

Finding the Fourth Proportional to 718,292,199.06, 991,159,003.71 and 405,007,744.14

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Solution

The fourth proportional to 718,292,199.06, 991,159,003.71 and 405,007,744.14 is: 558,863,193.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,292,199.06 : 991,159,003.71 = 405,007,744.14 : x
  2. Step 2: Convert to fraction form
    718,292,199.06/991,159,003.71 = 405,007,744.14/x
  3. Step 3: Cross multiply
    718,292,199.06x = 991,159,003.71 × 405,007,744.14
  4. Step 4: Simplify right side
    718,292,199.06x = 401,427,072,176,636,992
  5. Step 5: Solve for x
    x = 401,427,072,176,636,992/718,292,199.06
  6. Step 6: Final answer
    x = 558,863,193.42

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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.