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Finding the Fourth Proportional to 550,350.40, 825,525.60 and 425,780.80

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Solution

The fourth proportional to 550,350.40, 825,525.60 and 425,780.80 is: 638,671.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,350.40 : 825,525.60 = 425,780.80 : x
  2. Step 2: Convert to fraction form
    550,350.40/825,525.60 = 425,780.80/x
  3. Step 3: Cross multiply
    550,350.40x = 825,525.60 × 425,780.80
  4. Step 4: Simplify right side
    550,350.40x = 351,492,950,388.48
  5. Step 5: Solve for x
    x = 351,492,950,388.48/550,350.40
  6. Step 6: Final answer
    x = 638,671.20

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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.