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Finding the Fourth Proportional to 675,262.56, 931,942.70 and 388,838.46

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Solution

The fourth proportional to 675,262.56, 931,942.70 and 388,838.46 is: 536,643.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,262.56 : 931,942.70 = 388,838.46 : x
  2. Step 2: Convert to fraction form
    675,262.56/931,942.70 = 388,838.46/x
  3. Step 3: Cross multiply
    675,262.56x = 931,942.70 × 388,838.46
  4. Step 4: Simplify right side
    675,262.56x = 362,375,164,276.24
  5. Step 5: Solve for x
    x = 362,375,164,276.24/675,262.56
  6. Step 6: Final answer
    x = 536,643.35

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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.