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Finding the Fourth Proportional to 556,081.20, 834,121.80 and 486,097.20

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Solution

The fourth proportional to 556,081.20, 834,121.80 and 486,097.20 is: 729,145.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,081.20 : 834,121.80 = 486,097.20 : x
  2. Step 2: Convert to fraction form
    556,081.20/834,121.80 = 486,097.20/x
  3. Step 3: Cross multiply
    556,081.20x = 834,121.80 × 486,097.20
  4. Step 4: Simplify right side
    556,081.20x = 405,464,271,438.96
  5. Step 5: Solve for x
    x = 405,464,271,438.96/556,081.20
  6. Step 6: Final answer
    x = 729,145.80

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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.