Home / 1,328,604,006.80-1,992,906,010.20-408,360,771.20

Finding the Fourth Proportional to 1,328,604,006.80, 1,992,906,010.20 and 408,360,771.20

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Solution

The fourth proportional to 1,328,604,006.80, 1,992,906,010.20 and 408,360,771.20 is: 612,541,156.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,604,006.80 : 1,992,906,010.20 = 408,360,771.20 : x
  2. Step 2: Convert to fraction form
    1,328,604,006.80/1,992,906,010.20 = 408,360,771.20/x
  3. Step 3: Cross multiply
    1,328,604,006.80x = 1,992,906,010.20 × 408,360,771.20
  4. Step 4: Simplify right side
    1,328,604,006.80x = 813,824,635,254,387,072
  5. Step 5: Solve for x
    x = 813,824,635,254,387,072/1,328,604,006.80
  6. Step 6: Final answer
    x = 612,541,156.80

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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.