Home / 508,361,507.21-701,500,379.60-285,300,108.43

Finding the Fourth Proportional to 508,361,507.21, 701,500,379.60 and 285,300,108.43

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Solution

The fourth proportional to 508,361,507.21, 701,500,379.60 and 285,300,108.43 is: 393,692,542.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,361,507.21 : 701,500,379.60 = 285,300,108.43 : x
  2. Step 2: Convert to fraction form
    508,361,507.21/701,500,379.60 = 285,300,108.43/x
  3. Step 3: Cross multiply
    508,361,507.21x = 701,500,379.60 × 285,300,108.43
  4. Step 4: Simplify right side
    508,361,507.21x = 200,138,134,362,525,664
  5. Step 5: Solve for x
    x = 200,138,134,362,525,664/508,361,507.21
  6. Step 6: Final answer
    x = 393,692,542.66

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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.