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Finding the Fourth Proportional to 670,322.66, 924,990.17 and 394,636.73

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Solution

The fourth proportional to 670,322.66, 924,990.17 and 394,636.73 is: 544,566.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,322.66 : 924,990.17 = 394,636.73 : x
  2. Step 2: Convert to fraction form
    670,322.66/924,990.17 = 394,636.73/x
  3. Step 3: Cross multiply
    670,322.66x = 924,990.17 × 394,636.73
  4. Step 4: Simplify right side
    670,322.66x = 365,035,089,372.81
  5. Step 5: Solve for x
    x = 365,035,089,372.81/670,322.66
  6. Step 6: Final answer
    x = 544,566.24

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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.