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Finding the Fourth Proportional to 675,169.73, 931,848.80 and 388,855.58

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Solution

The fourth proportional to 675,169.73, 931,848.80 and 388,855.58 is: 536,686.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,169.73 : 931,848.80 = 388,855.58 : x
  2. Step 2: Convert to fraction form
    675,169.73/931,848.80 = 388,855.58/x
  3. Step 3: Cross multiply
    675,169.73x = 931,848.80 × 388,855.58
  4. Step 4: Simplify right side
    675,169.73x = 362,354,605,596.30
  5. Step 5: Solve for x
    x = 362,354,605,596.30/675,169.73
  6. Step 6: Final answer
    x = 536,686.69

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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.