Home / 685,853.20-1,029,443.80-331,116.13

Finding the Fourth Proportional to 685,853.20, 1,029,443.80 and 331,116.13

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Solution

The fourth proportional to 685,853.20, 1,029,443.80 and 331,116.13 is: 496,994.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,853.20 : 1,029,443.80 = 331,116.13 : x
  2. Step 2: Convert to fraction form
    685,853.20/1,029,443.80 = 331,116.13/x
  3. Step 3: Cross multiply
    685,853.20x = 1,029,443.80 × 331,116.13
  4. Step 4: Simplify right side
    685,853.20x = 340,865,447,108.49
  5. Step 5: Solve for x
    x = 340,865,447,108.49/685,853.20
  6. Step 6: Final answer
    x = 496,994.76

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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.