Home / 858,361.20-1,287,714.60-297,279.60

Finding the Fourth Proportional to 858,361.20, 1,287,714.60 and 297,279.60

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Solution

The fourth proportional to 858,361.20, 1,287,714.60 and 297,279.60 is: 445,979.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,361.20 : 1,287,714.60 = 297,279.60 : x
  2. Step 2: Convert to fraction form
    858,361.20/1,287,714.60 = 297,279.60/x
  3. Step 3: Cross multiply
    858,361.20x = 1,287,714.60 × 297,279.60
  4. Step 4: Simplify right side
    858,361.20x = 382,811,281,202.16
  5. Step 5: Solve for x
    x = 382,811,281,202.16/858,361.20
  6. Step 6: Final answer
    x = 445,979.25

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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.