Home / 818,932,021.80-1,228,398,032.70-455,426,377.80

Finding the Fourth Proportional to 818,932,021.80, 1,228,398,032.70 and 455,426,377.80

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Solution

The fourth proportional to 818,932,021.80, 1,228,398,032.70 and 455,426,377.80 is: 683,139,566.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,932,021.80 : 1,228,398,032.70 = 455,426,377.80 : x
  2. Step 2: Convert to fraction form
    818,932,021.80/1,228,398,032.70 = 455,426,377.80/x
  3. Step 3: Cross multiply
    818,932,021.80x = 1,228,398,032.70 × 455,426,377.80
  4. Step 4: Simplify right side
    818,932,021.80x = 559,444,866,529,206,976
  5. Step 5: Solve for x
    x = 559,444,866,529,206,976/818,932,021.80
  6. Step 6: Final answer
    x = 683,139,566.70

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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.