Home / 476,487,042.81-657,630,099.48-396,976,021.96

Finding the Fourth Proportional to 476,487,042.81, 657,630,099.48 and 396,976,021.96

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Solution

The fourth proportional to 476,487,042.81, 657,630,099.48 and 396,976,021.96 is: 547,891,878.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,487,042.81 : 657,630,099.48 = 396,976,021.96 : x
  2. Step 2: Convert to fraction form
    476,487,042.81/657,630,099.48 = 396,976,021.96/x
  3. Step 3: Cross multiply
    476,487,042.81x = 657,630,099.48 × 396,976,021.96
  4. Step 4: Simplify right side
    476,487,042.81x = 261,063,380,810,744,576
  5. Step 5: Solve for x
    x = 261,063,380,810,744,576/476,487,042.81
  6. Step 6: Final answer
    x = 547,891,878.18

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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.