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Finding the Fourth Proportional to 579,210.40, 869,074.80 and 263,504.80

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Solution

The fourth proportional to 579,210.40, 869,074.80 and 263,504.80 is: 395,375.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,210.40 : 869,074.80 = 263,504.80 : x
  2. Step 2: Convert to fraction form
    579,210.40/869,074.80 = 263,504.80/x
  3. Step 3: Cross multiply
    579,210.40x = 869,074.80 × 263,504.80
  4. Step 4: Simplify right side
    579,210.40x = 229,005,381,359.04
  5. Step 5: Solve for x
    x = 229,005,381,359.04/579,210.40
  6. Step 6: Final answer
    x = 395,375.12

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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.