Home / 689,641,439.40-1,034,966,043.90-485,568,095.40

Finding the Fourth Proportional to 689,641,439.40, 1,034,966,043.90 and 485,568,095.40

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Solution

The fourth proportional to 689,641,439.40, 1,034,966,043.90 and 485,568,095.40 is: 728,706,922.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,641,439.40 : 1,034,966,043.90 = 485,568,095.40 : x
  2. Step 2: Convert to fraction form
    689,641,439.40/1,034,966,043.90 = 485,568,095.40/x
  3. Step 3: Cross multiply
    689,641,439.40x = 1,034,966,043.90 × 485,568,095.40
  4. Step 4: Simplify right side
    689,641,439.40x = 502,546,490,740,195,776
  5. Step 5: Solve for x
    x = 502,546,490,740,195,776/689,641,439.40
  6. Step 6: Final answer
    x = 728,706,922.22

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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.