Home / 515,441,375.36-711,317,659.32-280,501,938.08

Finding the Fourth Proportional to 515,441,375.36, 711,317,659.32 and 280,501,938.08

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Solution

The fourth proportional to 515,441,375.36, 711,317,659.32 and 280,501,938.08 is: 387,097,333.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,441,375.36 : 711,317,659.32 = 280,501,938.08 : x
  2. Step 2: Convert to fraction form
    515,441,375.36/711,317,659.32 = 280,501,938.08/x
  3. Step 3: Cross multiply
    515,441,375.36x = 711,317,659.32 × 280,501,938.08
  4. Step 4: Simplify right side
    515,441,375.36x = 199,525,982,029,789,184
  5. Step 5: Solve for x
    x = 199,525,982,029,789,184/515,441,375.36
  6. Step 6: Final answer
    x = 387,097,333.60

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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.