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Finding the Fourth Proportional to 551,325.87, 760,848.12 and 309,651.03

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Solution

The fourth proportional to 551,325.87, 760,848.12 and 309,651.03 is: 427,328.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,325.87 : 760,848.12 = 309,651.03 : x
  2. Step 2: Convert to fraction form
    551,325.87/760,848.12 = 309,651.03/x
  3. Step 3: Cross multiply
    551,325.87x = 760,848.12 × 309,651.03
  4. Step 4: Simplify right side
    551,325.87x = 235,597,404,031.56
  5. Step 5: Solve for x
    x = 235,597,404,031.56/551,325.87
  6. Step 6: Final answer
    x = 427,328.77

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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.