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Finding the Fourth Proportional to 567,002.40, 851,815.80 and 389,855.40

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Solution

The fourth proportional to 567,002.40, 851,815.80 and 389,855.40 is: 585,685.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,002.40 : 851,815.80 = 389,855.40 : x
  2. Step 2: Convert to fraction form
    567,002.40/851,815.80 = 389,855.40/x
  3. Step 3: Cross multiply
    567,002.40x = 851,815.80 × 389,855.40
  4. Step 4: Simplify right side
    567,002.40x = 332,084,989,435.32
  5. Step 5: Solve for x
    x = 332,084,989,435.32/567,002.40
  6. Step 6: Final answer
    x = 585,685.33

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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.