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Finding the Fourth Proportional to 649,766.40, 974,503.80 and 426,692.40

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Solution

The fourth proportional to 649,766.40, 974,503.80 and 426,692.40 is: 639,942.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,766.40 : 974,503.80 = 426,692.40 : x
  2. Step 2: Convert to fraction form
    649,766.40/974,503.80 = 426,692.40/x
  3. Step 3: Cross multiply
    649,766.40x = 974,503.80 × 426,692.40
  4. Step 4: Simplify right side
    649,766.40x = 415,813,365,231.12
  5. Step 5: Solve for x
    x = 415,813,365,231.12/649,766.40
  6. Step 6: Final answer
    x = 639,942.86

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1.5x scale

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.