Home / 689,040.57-1,033,698.81-385,865.87

Finding the Fourth Proportional to 689,040.57, 1,033,698.81 and 385,865.87

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Solution

The fourth proportional to 689,040.57, 1,033,698.81 and 385,865.87 is: 578,876.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,040.57 : 1,033,698.81 = 385,865.87 : x
  2. Step 2: Convert to fraction form
    689,040.57/1,033,698.81 = 385,865.87/x
  3. Step 3: Cross multiply
    689,040.57x = 1,033,698.81 × 385,865.87
  4. Step 4: Simplify right side
    689,040.57x = 398,869,083,540.79
  5. Step 5: Solve for x
    x = 398,869,083,540.79/689,040.57
  6. Step 6: Final answer
    x = 578,876.05

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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.