Home / 993,531.10-1,489,460.73-432,142.78

Finding the Fourth Proportional to 993,531.10, 1,489,460.73 and 432,142.78

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Solution

The fourth proportional to 993,531.10, 1,489,460.73 and 432,142.78 is: 647,850.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,531.10 : 1,489,460.73 = 432,142.78 : x
  2. Step 2: Convert to fraction form
    993,531.10/1,489,460.73 = 432,142.78/x
  3. Step 3: Cross multiply
    993,531.10x = 1,489,460.73 × 432,142.78
  4. Step 4: Simplify right side
    993,531.10x = 643,659,700,563.03
  5. Step 5: Solve for x
    x = 643,659,700,563.03/993,531.10
  6. Step 6: Final answer
    x = 647,850.58

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1.5x scale

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.