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Finding the Fourth Proportional to 629,455.56, 943,511 and 359,001.40

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Solution

The fourth proportional to 629,455.56, 943,511 and 359,001.40 is: 538,118.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,455.56 : 943,511 = 359,001.40 : x
  2. Step 2: Convert to fraction form
    629,455.56/943,511 = 359,001.40/x
  3. Step 3: Cross multiply
    629,455.56x = 943,511 × 359,001.40
  4. Step 4: Simplify right side
    629,455.56x = 338,721,769,915.40
  5. Step 5: Solve for x
    x = 338,721,769,915.40/629,455.56
  6. Step 6: Final answer
    x = 538,118.64

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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.