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Finding the Fourth Proportional to 575,645.20, 863,467.80 and 326,813.20

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Solution

The fourth proportional to 575,645.20, 863,467.80 and 326,813.20 is: 490,219.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,645.20 : 863,467.80 = 326,813.20 : x
  2. Step 2: Convert to fraction form
    575,645.20/863,467.80 = 326,813.20/x
  3. Step 3: Cross multiply
    575,645.20x = 863,467.80 × 326,813.20
  4. Step 4: Simplify right side
    575,645.20x = 282,192,674,814.96
  5. Step 5: Solve for x
    x = 282,192,674,814.96/575,645.20
  6. Step 6: Final answer
    x = 490,219.80

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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.