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Finding the Fourth Proportional to 556,519.26, 833,659.43 and 421,813.74

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Solution

The fourth proportional to 556,519.26, 833,659.43 and 421,813.74 is: 631,872.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,519.26 : 833,659.43 = 421,813.74 : x
  2. Step 2: Convert to fraction form
    556,519.26/833,659.43 = 421,813.74/x
  3. Step 3: Cross multiply
    556,519.26x = 833,659.43 × 421,813.74
  4. Step 4: Simplify right side
    556,519.26x = 351,648,995,777.20
  5. Step 5: Solve for x
    x = 351,648,995,777.20/556,519.26
  6. Step 6: Final answer
    x = 631,872.10

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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.