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Finding the Fourth Proportional to 670,274.21, 924,971.90 and 498,958.29

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Solution

The fourth proportional to 670,274.21, 924,971.90 and 498,958.29 is: 688,557.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,274.21 : 924,971.90 = 498,958.29 : x
  2. Step 2: Convert to fraction form
    670,274.21/924,971.90 = 498,958.29/x
  3. Step 3: Cross multiply
    670,274.21x = 924,971.90 × 498,958.29
  4. Step 4: Simplify right side
    670,274.21x = 461,522,395,027.26
  5. Step 5: Solve for x
    x = 461,522,395,027.26/670,274.21
  6. Step 6: Final answer
    x = 688,557.59

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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.