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Finding the Fourth Proportional to 707,368.08, 976,165.20 and 385,077

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Solution

The fourth proportional to 707,368.08, 976,165.20 and 385,077 is: 531,404.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,368.08 : 976,165.20 = 385,077 : x
  2. Step 2: Convert to fraction form
    707,368.08/976,165.20 = 385,077/x
  3. Step 3: Cross multiply
    707,368.08x = 976,165.20 × 385,077
  4. Step 4: Simplify right side
    707,368.08x = 375,898,766,720.40
  5. Step 5: Solve for x
    x = 375,898,766,720.40/707,368.08
  6. Step 6: Final answer
    x = 531,404.76

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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.