Home / 540,918,003.79-811,108,332.43-172,405,004.59

Finding the Fourth Proportional to 540,918,003.79, 811,108,332.43 and 172,405,004.59

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Solution

The fourth proportional to 540,918,003.79, 811,108,332.43 and 172,405,004.59 is: 258,521,873.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,918,003.79 : 811,108,332.43 = 172,405,004.59 : x
  2. Step 2: Convert to fraction form
    540,918,003.79/811,108,332.43 = 172,405,004.59/x
  3. Step 3: Cross multiply
    540,918,003.79x = 811,108,332.43 × 172,405,004.59
  4. Step 4: Simplify right side
    540,918,003.79x = 139,839,135,773,122,624
  5. Step 5: Solve for x
    x = 139,839,135,773,122,624/540,918,003.79
  6. Step 6: Final answer
    x = 258,521,873.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.