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Finding the Fourth Proportional to 628,410.30, 942,615.45 and 486,692.70

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Solution

The fourth proportional to 628,410.30, 942,615.45 and 486,692.70 is: 730,039.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,410.30 : 942,615.45 = 486,692.70 : x
  2. Step 2: Convert to fraction form
    628,410.30/942,615.45 = 486,692.70/x
  3. Step 3: Cross multiply
    628,410.30x = 942,615.45 × 486,692.70
  4. Step 4: Simplify right side
    628,410.30x = 458,764,058,422.22
  5. Step 5: Solve for x
    x = 458,764,058,422.22/628,410.30
  6. Step 6: Final answer
    x = 730,039.05

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Double scale
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Similar ratio
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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.