Home / 856,090.28-1,284,220.38-316,488

Finding the Fourth Proportional to 856,090.28, 1,284,220.38 and 316,488

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Solution

The fourth proportional to 856,090.28, 1,284,220.38 and 316,488 is: 474,763.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,090.28 : 1,284,220.38 = 316,488 : x
  2. Step 2: Convert to fraction form
    856,090.28/1,284,220.38 = 316,488/x
  3. Step 3: Cross multiply
    856,090.28x = 1,284,220.38 × 316,488
  4. Step 4: Simplify right side
    856,090.28x = 406,440,339,625.44
  5. Step 5: Solve for x
    x = 406,440,339,625.44/856,090.28
  6. Step 6: Final answer
    x = 474,763.41

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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.