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Finding the Fourth Proportional to 641,692.92, 963,485.61 and 357,937.89

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Solution

The fourth proportional to 641,692.92, 963,485.61 and 357,937.89 is: 537,434.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,692.92 : 963,485.61 = 357,937.89 : x
  2. Step 2: Convert to fraction form
    641,692.92/963,485.61 = 357,937.89/x
  3. Step 3: Cross multiply
    641,692.92x = 963,485.61 × 357,937.89
  4. Step 4: Simplify right side
    641,692.92x = 344,868,006,288.76
  5. Step 5: Solve for x
    x = 344,868,006,288.76/641,692.92
  6. Step 6: Final answer
    x = 537,434.64

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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.