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Finding the Fourth Proportional to 675,265.16, 931,895.78 and 388,877.51

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Solution

The fourth proportional to 675,265.16, 931,895.78 and 388,877.51 is: 536,668.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,265.16 : 931,895.78 = 388,877.51 : x
  2. Step 2: Convert to fraction form
    675,265.16/931,895.78 = 388,877.51/x
  3. Step 3: Cross multiply
    675,265.16x = 931,895.78 × 388,877.51
  4. Step 4: Simplify right side
    675,265.16x = 362,393,310,891.26
  5. Step 5: Solve for x
    x = 362,393,310,891.26/675,265.16
  6. Step 6: Final answer
    x = 536,668.16

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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.