Home / 469,274,908.20-648,136,849.86-309,055,115.67

Finding the Fourth Proportional to 469,274,908.20, 648,136,849.86 and 309,055,115.67

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Solution

The fourth proportional to 469,274,908.20, 648,136,849.86 and 309,055,115.67 is: 426,850,030.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,274,908.20 : 648,136,849.86 = 309,055,115.67 : x
  2. Step 2: Convert to fraction form
    469,274,908.20/648,136,849.86 = 309,055,115.67/x
  3. Step 3: Cross multiply
    469,274,908.20x = 648,136,849.86 × 309,055,115.67
  4. Step 4: Simplify right side
    469,274,908.20x = 200,310,009,103,471,744
  5. Step 5: Solve for x
    x = 200,310,009,103,471,744/469,274,908.20
  6. Step 6: Final answer
    x = 426,850,030.98

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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.