Home / 678,574,618.63-936,508,799.97-410,797,992.15

Finding the Fourth Proportional to 678,574,618.63, 936,508,799.97 and 410,797,992.15

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Solution

The fourth proportional to 678,574,618.63, 936,508,799.97 and 410,797,992.15 is: 566,947,133.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,574,618.63 : 936,508,799.97 = 410,797,992.15 : x
  2. Step 2: Convert to fraction form
    678,574,618.63/936,508,799.97 = 410,797,992.15/x
  3. Step 3: Cross multiply
    678,574,618.63x = 936,508,799.97 × 410,797,992.15
  4. Step 4: Simplify right side
    678,574,618.63x = 384,715,934,658,481,984
  5. Step 5: Solve for x
    x = 384,715,934,658,481,984/678,574,618.63
  6. Step 6: Final answer
    x = 566,947,133.15

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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.