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Finding the Fourth Proportional to 556,519.76, 833,660.17 and 421,814.23

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Solution

The fourth proportional to 556,519.76, 833,660.17 and 421,814.23 is: 631,872.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,519.76 : 833,660.17 = 421,814.23 : x
  2. Step 2: Convert to fraction form
    556,519.76/833,660.17 = 421,814.23/x
  3. Step 3: Cross multiply
    556,519.76x = 833,660.17 × 421,814.23
  4. Step 4: Simplify right side
    556,519.76x = 351,649,722,677.76
  5. Step 5: Solve for x
    x = 351,649,722,677.76/556,519.76
  6. Step 6: Final answer
    x = 631,872.84

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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.