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Finding the Fourth Proportional to 641,692.20, 960,464.70 and 500,687.40

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Solution

The fourth proportional to 641,692.20, 960,464.70 and 500,687.40 is: 749,413.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,692.20 : 960,464.70 = 500,687.40 : x
  2. Step 2: Convert to fraction form
    641,692.20/960,464.70 = 500,687.40/x
  3. Step 3: Cross multiply
    641,692.20x = 960,464.70 × 500,687.40
  4. Step 4: Simplify right side
    641,692.20x = 480,892,573,434.78
  5. Step 5: Solve for x
    x = 480,892,573,434.78/641,692.20
  6. Step 6: Final answer
    x = 749,413.15

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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.