Home / 426,322.10-639,713.55-189,701.30

Finding the Fourth Proportional to 426,322.10, 639,713.55 and 189,701.30

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Solution

The fourth proportional to 426,322.10, 639,713.55 and 189,701.30 is: 284,654.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,322.10 : 639,713.55 = 189,701.30 : x
  2. Step 2: Convert to fraction form
    426,322.10/639,713.55 = 189,701.30/x
  3. Step 3: Cross multiply
    426,322.10x = 639,713.55 × 189,701.30
  4. Step 4: Simplify right side
    426,322.10x = 121,354,492,062.62
  5. Step 5: Solve for x
    x = 121,354,492,062.62/426,322.10
  6. Step 6: Final answer
    x = 284,654.47

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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.