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Finding the Fourth Proportional to 674,955.90, 931,438.71 and 369,033.48

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Solution

The fourth proportional to 674,955.90, 931,438.71 and 369,033.48 is: 509,265.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,955.90 : 931,438.71 = 369,033.48 : x
  2. Step 2: Convert to fraction form
    674,955.90/931,438.71 = 369,033.48/x
  3. Step 3: Cross multiply
    674,955.90x = 931,438.71 × 369,033.48
  4. Step 4: Simplify right side
    674,955.90x = 343,732,068,558.01
  5. Step 5: Solve for x
    x = 343,732,068,558.01/674,955.90
  6. Step 6: Final answer
    x = 509,265.97

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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.