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Finding the Fourth Proportional to 569,330.20, 785,692.38 and 311,221.41

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Solution

The fourth proportional to 569,330.20, 785,692.38 and 311,221.41 is: 429,494.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,330.20 : 785,692.38 = 311,221.41 : x
  2. Step 2: Convert to fraction form
    569,330.20/785,692.38 = 311,221.41/x
  3. Step 3: Cross multiply
    569,330.20x = 785,692.38 × 311,221.41
  4. Step 4: Simplify right side
    569,330.20x = 244,524,290,329.86
  5. Step 5: Solve for x
    x = 244,524,290,329.86/569,330.20
  6. Step 6: Final answer
    x = 429,494.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.