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Finding the Fourth Proportional to 711,408.31, 982,063.71 and 453,630.78

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Solution

The fourth proportional to 711,408.31, 982,063.71 and 453,630.78 is: 626,214.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,408.31 : 982,063.71 = 453,630.78 : x
  2. Step 2: Convert to fraction form
    711,408.31/982,063.71 = 453,630.78/x
  3. Step 3: Cross multiply
    711,408.31x = 982,063.71 × 453,630.78
  4. Step 4: Simplify right side
    711,408.31x = 445,494,326,776.99
  5. Step 5: Solve for x
    x = 445,494,326,776.99/711,408.31
  6. Step 6: Final answer
    x = 626,214.68

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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.