Home / 664,075,725.80-996,262,887.90-391,306,087.40

Finding the Fourth Proportional to 664,075,725.80, 996,262,887.90 and 391,306,087.40

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Solution

The fourth proportional to 664,075,725.80, 996,262,887.90 and 391,306,087.40 is: 587,047,105.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,075,725.80 : 996,262,887.90 = 391,306,087.40 : x
  2. Step 2: Convert to fraction form
    664,075,725.80/996,262,887.90 = 391,306,087.40/x
  3. Step 3: Cross multiply
    664,075,725.80x = 996,262,887.90 × 391,306,087.40
  4. Step 4: Simplify right side
    664,075,725.80x = 389,843,732,685,973,760
  5. Step 5: Solve for x
    x = 389,843,732,685,973,760/664,075,725.80
  6. Step 6: Final answer
    x = 587,047,105.53

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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.