Home / 856,549.44-1,284,386.68-316,778.40

Finding the Fourth Proportional to 856,549.44, 1,284,386.68 and 316,778.40

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Solution

The fourth proportional to 856,549.44, 1,284,386.68 and 316,778.40 is: 475,005.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,549.44 : 1,284,386.68 = 316,778.40 : x
  2. Step 2: Convert to fraction form
    856,549.44/1,284,386.68 = 316,778.40/x
  3. Step 3: Cross multiply
    856,549.44x = 1,284,386.68 × 316,778.40
  4. Step 4: Simplify right side
    856,549.44x = 406,865,957,471.71
  5. Step 5: Solve for x
    x = 406,865,957,471.71/856,549.44
  6. Step 6: Final answer
    x = 475,005.81

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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.