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Finding the Fourth Proportional to 630,511, 869,986.14 and 375,885.88

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Solution

The fourth proportional to 630,511, 869,986.14 and 375,885.88 is: 518,651.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,511 : 869,986.14 = 375,885.88 : x
  2. Step 2: Convert to fraction form
    630,511/869,986.14 = 375,885.88/x
  3. Step 3: Cross multiply
    630,511x = 869,986.14 × 375,885.88
  4. Step 4: Simplify right side
    630,511x = 327,015,505,821.70
  5. Step 5: Solve for x
    x = 327,015,505,821.70/630,511
  6. Step 6: Final answer
    x = 518,651.55

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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.