Home / 772,207.12-1,157,301.88-430,636.91

Finding the Fourth Proportional to 772,207.12, 1,157,301.88 and 430,636.91

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Solution

The fourth proportional to 772,207.12, 1,157,301.88 and 430,636.91 is: 645,392.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,207.12 : 1,157,301.88 = 430,636.91 : x
  2. Step 2: Convert to fraction form
    772,207.12/1,157,301.88 = 430,636.91/x
  3. Step 3: Cross multiply
    772,207.12x = 1,157,301.88 × 430,636.91
  4. Step 4: Simplify right side
    772,207.12x = 498,376,905,540.39
  5. Step 5: Solve for x
    x = 498,376,905,540.39/772,207.12
  6. Step 6: Final answer
    x = 645,392.79

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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.