Home / 812,114,982.28-1,218,028,475.87-369,353,953.95

Finding the Fourth Proportional to 812,114,982.28, 1,218,028,475.87 and 369,353,953.95

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Solution

The fourth proportional to 812,114,982.28, 1,218,028,475.87 and 369,353,953.95 is: 553,965,440.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,114,982.28 : 1,218,028,475.87 = 369,353,953.95 : x
  2. Step 2: Convert to fraction form
    812,114,982.28/1,218,028,475.87 = 369,353,953.95/x
  3. Step 3: Cross multiply
    812,114,982.28x = 1,218,028,475.87 × 369,353,953.95
  4. Step 4: Simplify right side
    812,114,982.28x = 449,883,633,586,276,608
  5. Step 5: Solve for x
    x = 449,883,633,586,276,608/812,114,982.28
  6. Step 6: Final answer
    x = 553,965,440.12

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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.