Home / 515,450,451.38-711,321,738.93-283,663,443.38

Finding the Fourth Proportional to 515,450,451.38, 711,321,738.93 and 283,663,443.38

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Solution

The fourth proportional to 515,450,451.38, 711,321,738.93 and 283,663,443.38 is: 391,455,615.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,450,451.38 : 711,321,738.93 = 283,663,443.38 : x
  2. Step 2: Convert to fraction form
    515,450,451.38/711,321,738.93 = 283,663,443.38/x
  3. Step 3: Cross multiply
    515,450,451.38x = 711,321,738.93 × 283,663,443.38
  4. Step 4: Simplify right side
    515,450,451.38x = 201,775,973,815,933,184
  5. Step 5: Solve for x
    x = 201,775,973,815,933,184/515,450,451.38
  6. Step 6: Final answer
    x = 391,455,615.72

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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.