Home / 859,096.60-1,286,895.30-438,609.40

Finding the Fourth Proportional to 859,096.60, 1,286,895.30 and 438,609.40

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Solution

The fourth proportional to 859,096.60, 1,286,895.30 and 438,609.40 is: 657,020.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,096.60 : 1,286,895.30 = 438,609.40 : x
  2. Step 2: Convert to fraction form
    859,096.60/1,286,895.30 = 438,609.40/x
  3. Step 3: Cross multiply
    859,096.60x = 1,286,895.30 × 438,609.40
  4. Step 4: Simplify right side
    859,096.60x = 564,444,375,395.82
  5. Step 5: Solve for x
    x = 564,444,375,395.82/859,096.60
  6. Step 6: Final answer
    x = 657,020.85

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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.