Home / 724,991,013.80-1,087,486,520.70-449,491,999.40

Finding the Fourth Proportional to 724,991,013.80, 1,087,486,520.70 and 449,491,999.40

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Solution

The fourth proportional to 724,991,013.80, 1,087,486,520.70 and 449,491,999.40 is: 674,237,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,991,013.80 : 1,087,486,520.70 = 449,491,999.40 : x
  2. Step 2: Convert to fraction form
    724,991,013.80/1,087,486,520.70 = 449,491,999.40/x
  3. Step 3: Cross multiply
    724,991,013.80x = 1,087,486,520.70 × 449,491,999.40
  4. Step 4: Simplify right side
    724,991,013.80x = 488,816,490,509,992,512
  5. Step 5: Solve for x
    x = 488,816,490,509,992,512/724,991,013.80
  6. Step 6: Final answer
    x = 674,237,999.10

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1.5x scale

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.