Home / 708,589,939.70-1,062,884,909.55-320,425,433.30

Finding the Fourth Proportional to 708,589,939.70, 1,062,884,909.55 and 320,425,433.30

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Solution

The fourth proportional to 708,589,939.70, 1,062,884,909.55 and 320,425,433.30 is: 480,638,149.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,589,939.70 : 1,062,884,909.55 = 320,425,433.30 : x
  2. Step 2: Convert to fraction form
    708,589,939.70/1,062,884,909.55 = 320,425,433.30/x
  3. Step 3: Cross multiply
    708,589,939.70x = 1,062,884,909.55 × 320,425,433.30
  4. Step 4: Simplify right side
    708,589,939.70x = 340,575,357,690,590,080
  5. Step 5: Solve for x
    x = 340,575,357,690,590,080/708,589,939.70
  6. Step 6: Final answer
    x = 480,638,149.95

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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.