Home / 986,720.34-1,479,821.31-425,630.10

Finding the Fourth Proportional to 986,720.34, 1,479,821.31 and 425,630.10

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Solution

The fourth proportional to 986,720.34, 1,479,821.31 and 425,630.10 is: 638,333.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,720.34 : 1,479,821.31 = 425,630.10 : x
  2. Step 2: Convert to fraction form
    986,720.34/1,479,821.31 = 425,630.10/x
  3. Step 3: Cross multiply
    986,720.34x = 1,479,821.31 × 425,630.10
  4. Step 4: Simplify right side
    986,720.34x = 629,856,492,157.43
  5. Step 5: Solve for x
    x = 629,856,492,157.43/986,720.34
  6. Step 6: Final answer
    x = 638,333.34

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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.