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Finding the Fourth Proportional to 521,716.60, 782,574.90 and 486,465.40

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Solution

The fourth proportional to 521,716.60, 782,574.90 and 486,465.40 is: 729,698.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,716.60 : 782,574.90 = 486,465.40 : x
  2. Step 2: Convert to fraction form
    521,716.60/782,574.90 = 486,465.40/x
  3. Step 3: Cross multiply
    521,716.60x = 782,574.90 × 486,465.40
  4. Step 4: Simplify right side
    521,716.60x = 380,695,611,758.46
  5. Step 5: Solve for x
    x = 380,695,611,758.46/521,716.60
  6. Step 6: Final answer
    x = 729,698.10

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Similar ratio
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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.