Home / 689,606.85-1,034,399.88-310,259.70

Finding the Fourth Proportional to 689,606.85, 1,034,399.88 and 310,259.70

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Solution

The fourth proportional to 689,606.85, 1,034,399.88 and 310,259.70 is: 465,384.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,606.85 : 1,034,399.88 = 310,259.70 : x
  2. Step 2: Convert to fraction form
    689,606.85/1,034,399.88 = 310,259.70/x
  3. Step 3: Cross multiply
    689,606.85x = 1,034,399.88 × 310,259.70
  4. Step 4: Simplify right side
    689,606.85x = 320,932,595,285.36
  5. Step 5: Solve for x
    x = 320,932,595,285.36/689,606.85
  6. Step 6: Final answer
    x = 465,384.87

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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.