Home / 856,536.90-1,284,367.95-316,765.86

Finding the Fourth Proportional to 856,536.90, 1,284,367.95 and 316,765.86

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Solution

The fourth proportional to 856,536.90, 1,284,367.95 and 316,765.86 is: 474,987.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,536.90 : 1,284,367.95 = 316,765.86 : x
  2. Step 2: Convert to fraction form
    856,536.90/1,284,367.95 = 316,765.86/x
  3. Step 3: Cross multiply
    856,536.90x = 1,284,367.95 × 316,765.86
  4. Step 4: Simplify right side
    856,536.90x = 406,843,918,238.19
  5. Step 5: Solve for x
    x = 406,843,918,238.19/856,536.90
  6. Step 6: Final answer
    x = 474,987.03

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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.