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Finding the Fourth Proportional to 675,263.56, 931,944.08 and 388,839.46

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Solution

The fourth proportional to 675,263.56, 931,944.08 and 388,839.46 is: 536,644.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,263.56 : 931,944.08 = 388,839.46 : x
  2. Step 2: Convert to fraction form
    675,263.56/931,944.08 = 388,839.46/x
  3. Step 3: Cross multiply
    675,263.56x = 931,944.08 × 388,839.46
  4. Step 4: Simplify right side
    675,263.56x = 362,376,632,817.40
  5. Step 5: Solve for x
    x = 362,376,632,817.40/675,263.56
  6. Step 6: Final answer
    x = 536,644.73

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1.5x scale

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.