Home / 689,642,102.40-1,034,967,038.40-485,568,758.40

Finding the Fourth Proportional to 689,642,102.40, 1,034,967,038.40 and 485,568,758.40

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Solution

The fourth proportional to 689,642,102.40, 1,034,967,038.40 and 485,568,758.40 is: 728,707,916.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,642,102.40 : 1,034,967,038.40 = 485,568,758.40 : x
  2. Step 2: Convert to fraction form
    689,642,102.40/1,034,967,038.40 = 485,568,758.40/x
  3. Step 3: Cross multiply
    689,642,102.40x = 1,034,967,038.40 × 485,568,758.40
  4. Step 4: Simplify right side
    689,642,102.40x = 502,547,659,820,813,056
  5. Step 5: Solve for x
    x = 502,547,659,820,813,056/689,642,102.40
  6. Step 6: Final answer
    x = 728,707,916.86

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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.