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Finding the Fourth Proportional to 641,689.54, 963,480.53 and 357,934.49

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Solution

The fourth proportional to 641,689.54, 963,480.53 and 357,934.49 is: 537,429.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,689.54 : 963,480.53 = 357,934.49 : x
  2. Step 2: Convert to fraction form
    641,689.54/963,480.53 = 357,934.49/x
  3. Step 3: Cross multiply
    641,689.54x = 963,480.53 × 357,934.49
  4. Step 4: Simplify right side
    641,689.54x = 344,862,910,340.81
  5. Step 5: Solve for x
    x = 344,862,910,340.81/641,689.54
  6. Step 6: Final answer
    x = 537,429.54

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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.