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Finding the Fourth Proportional to 675,236.47, 931,722.82 and 388,701.19

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Solution

The fourth proportional to 675,236.47, 931,722.82 and 388,701.19 is: 536,348.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,236.47 : 931,722.82 = 388,701.19 : x
  2. Step 2: Convert to fraction form
    675,236.47/931,722.82 = 388,701.19/x
  3. Step 3: Cross multiply
    675,236.47x = 931,722.82 × 388,701.19
  4. Step 4: Simplify right side
    675,236.47x = 362,161,768,884.16
  5. Step 5: Solve for x
    x = 362,161,768,884.16/675,236.47
  6. Step 6: Final answer
    x = 536,348.06

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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.