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Finding the Fourth Proportional to 641,689.39, 963,480.29 and 357,934.34

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Solution

The fourth proportional to 641,689.39, 963,480.29 and 357,934.34 is: 537,429.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,689.39 : 963,480.29 = 357,934.34 : x
  2. Step 2: Convert to fraction form
    641,689.39/963,480.29 = 357,934.34/x
  3. Step 3: Cross multiply
    641,689.39x = 963,480.29 × 357,934.34
  4. Step 4: Simplify right side
    641,689.39x = 344,862,682,323.19
  5. Step 5: Solve for x
    x = 344,862,682,323.19/641,689.39
  6. Step 6: Final answer
    x = 537,429.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.