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Finding the Fourth Proportional to 491,126.60, 676,828.50 and 430,301

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Solution

The fourth proportional to 491,126.60, 676,828.50 and 430,301 is: 593,003.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,126.60 : 676,828.50 = 430,301 : x
  2. Step 2: Convert to fraction form
    491,126.60/676,828.50 = 430,301/x
  3. Step 3: Cross multiply
    491,126.60x = 676,828.50 × 430,301
  4. Step 4: Simplify right side
    491,126.60x = 291,239,980,378.50
  5. Step 5: Solve for x
    x = 291,239,980,378.50/491,126.60
  6. Step 6: Final answer
    x = 593,003.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.