Home / 856,537.40-1,284,368.70-316,766.36

Finding the Fourth Proportional to 856,537.40, 1,284,368.70 and 316,766.36

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Solution

The fourth proportional to 856,537.40, 1,284,368.70 and 316,766.36 is: 474,987.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,537.40 : 1,284,368.70 = 316,766.36 : x
  2. Step 2: Convert to fraction form
    856,537.40/1,284,368.70 = 316,766.36/x
  3. Step 3: Cross multiply
    856,537.40x = 1,284,368.70 × 316,766.36
  4. Step 4: Simplify right side
    856,537.40x = 406,844,797,996.93
  5. Step 5: Solve for x
    x = 406,844,797,996.93/856,537.40
  6. Step 6: Final answer
    x = 474,987.78

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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.