Home / 540,918,003.92-811,108,332.62-172,405,004.72

Finding the Fourth Proportional to 540,918,003.92, 811,108,332.62 and 172,405,004.72

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Solution

The fourth proportional to 540,918,003.92, 811,108,332.62 and 172,405,004.72 is: 258,521,873.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,918,003.92 : 811,108,332.62 = 172,405,004.72 : x
  2. Step 2: Convert to fraction form
    540,918,003.92/811,108,332.62 = 172,405,004.72/x
  3. Step 3: Cross multiply
    540,918,003.92x = 811,108,332.62 × 172,405,004.72
  4. Step 4: Simplify right side
    540,918,003.92x = 139,839,135,912,920,400
  5. Step 5: Solve for x
    x = 139,839,135,912,920,400/540,918,003.92
  6. Step 6: Final answer
    x = 258,521,873.74

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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.