Home / 689,641,695.40-1,034,966,427.90-485,568,351.40

Finding the Fourth Proportional to 689,641,695.40, 1,034,966,427.90 and 485,568,351.40

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Solution

The fourth proportional to 689,641,695.40, 1,034,966,427.90 and 485,568,351.40 is: 728,707,306.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,641,695.40 : 1,034,966,427.90 = 485,568,351.40 : x
  2. Step 2: Convert to fraction form
    689,641,695.40/1,034,966,427.90 = 485,568,351.40/x
  3. Step 3: Cross multiply
    689,641,695.40x = 1,034,966,427.90 × 485,568,351.40
  4. Step 4: Simplify right side
    689,641,695.40x = 502,546,942,149,749,952
  5. Step 5: Solve for x
    x = 502,546,942,149,749,952/689,641,695.40
  6. Step 6: Final answer
    x = 728,707,306.27

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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.