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Finding the Fourth Proportional to 954,503.80, 1,431,755.70 and 421,750.60

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Solution

The fourth proportional to 954,503.80, 1,431,755.70 and 421,750.60 is: 632,625.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    954,503.80 : 1,431,755.70 = 421,750.60 : x
  2. Step 2: Convert to fraction form
    954,503.80/1,431,755.70 = 421,750.60/x
  3. Step 3: Cross multiply
    954,503.80x = 1,431,755.70 × 421,750.60
  4. Step 4: Simplify right side
    954,503.80x = 603,843,825,528.42
  5. Step 5: Solve for x
    x = 603,843,825,528.42/954,503.80
  6. Step 6: Final answer
    x = 632,625.90

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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.