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Finding the Fourth Proportional to 629,041.20, 943,561.80 and 488,900.40

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Solution

The fourth proportional to 629,041.20, 943,561.80 and 488,900.40 is: 733,350.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,041.20 : 943,561.80 = 488,900.40 : x
  2. Step 2: Convert to fraction form
    629,041.20/943,561.80 = 488,900.40/x
  3. Step 3: Cross multiply
    629,041.20x = 943,561.80 × 488,900.40
  4. Step 4: Simplify right side
    629,041.20x = 461,307,741,444.72
  5. Step 5: Solve for x
    x = 461,307,741,444.72/629,041.20
  6. Step 6: Final answer
    x = 733,350.60

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Half scale
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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.