Home / 689,642,116.90-1,034,967,060.15-485,568,772.90

Finding the Fourth Proportional to 689,642,116.90, 1,034,967,060.15 and 485,568,772.90

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Solution

The fourth proportional to 689,642,116.90, 1,034,967,060.15 and 485,568,772.90 is: 728,707,938.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,642,116.90 : 1,034,967,060.15 = 485,568,772.90 : x
  2. Step 2: Convert to fraction form
    689,642,116.90/1,034,967,060.15 = 485,568,772.90/x
  3. Step 3: Cross multiply
    689,642,116.90x = 1,034,967,060.15 × 485,568,772.90
  4. Step 4: Simplify right side
    689,642,116.90x = 502,547,685,388,955,968
  5. Step 5: Solve for x
    x = 502,547,685,388,955,968/689,642,116.90
  6. Step 6: Final answer
    x = 728,707,938.62

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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.