Home / 690,018,155.51-1,034,422,571.50-259,498,982.39

Finding the Fourth Proportional to 690,018,155.51, 1,034,422,571.50 and 259,498,982.39

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Solution

The fourth proportional to 690,018,155.51, 1,034,422,571.50 and 259,498,982.39 is: 389,021,075.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,018,155.51 : 1,034,422,571.50 = 259,498,982.39 : x
  2. Step 2: Convert to fraction form
    690,018,155.51/1,034,422,571.50 = 259,498,982.39/x
  3. Step 3: Cross multiply
    690,018,155.51x = 1,034,422,571.50 × 259,498,982.39
  4. Step 4: Simplify right side
    690,018,155.51x = 268,431,604,659,676,128
  5. Step 5: Solve for x
    x = 268,431,604,659,676,128/690,018,155.51
  6. Step 6: Final answer
    x = 389,021,075.05

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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.