Home / 1,281,631,850.91-1,921,811,806.49-408,119,410.71

Finding the Fourth Proportional to 1,281,631,850.91, 1,921,811,806.49 and 408,119,410.71

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Solution

The fourth proportional to 1,281,631,850.91, 1,921,811,806.49 and 408,119,410.71 is: 611,976,599.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,631,850.91 : 1,921,811,806.49 = 408,119,410.71 : x
  2. Step 2: Convert to fraction form
    1,281,631,850.91/1,921,811,806.49 = 408,119,410.71/x
  3. Step 3: Cross multiply
    1,281,631,850.91x = 1,921,811,806.49 × 408,119,410.71
  4. Step 4: Simplify right side
    1,281,631,850.91x = 784,328,701,958,178,688
  5. Step 5: Solve for x
    x = 784,328,701,958,178,688/1,281,631,850.91
  6. Step 6: Final answer
    x = 611,976,599.52

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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.