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Finding the Fourth Proportional to 445,114.70, 667,672.05 and 429,368.30

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Solution

The fourth proportional to 445,114.70, 667,672.05 and 429,368.30 is: 644,052.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,114.70 : 667,672.05 = 429,368.30 : x
  2. Step 2: Convert to fraction form
    445,114.70/667,672.05 = 429,368.30/x
  3. Step 3: Cross multiply
    445,114.70x = 667,672.05 × 429,368.30
  4. Step 4: Simplify right side
    445,114.70x = 286,677,213,066.02
  5. Step 5: Solve for x
    x = 286,677,213,066.02/445,114.70
  6. Step 6: Final answer
    x = 644,052.45

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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.