Home / 862,081.90-1,189,817.79-499,732.42

Finding the Fourth Proportional to 862,081.90, 1,189,817.79 and 499,732.42

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Solution

The fourth proportional to 862,081.90, 1,189,817.79 and 499,732.42 is: 689,714.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,081.90 : 1,189,817.79 = 499,732.42 : x
  2. Step 2: Convert to fraction form
    862,081.90/1,189,817.79 = 499,732.42/x
  3. Step 3: Cross multiply
    862,081.90x = 1,189,817.79 × 499,732.42
  4. Step 4: Simplify right side
    862,081.90x = 594,590,523,555.75
  5. Step 5: Solve for x
    x = 594,590,523,555.75/862,081.90
  6. Step 6: Final answer
    x = 689,714.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.