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Finding the Fourth Proportional to 567,986.91, 783,820.87 and 309,863.87

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Solution

The fourth proportional to 567,986.91, 783,820.87 and 309,863.87 is: 427,611.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,986.91 : 783,820.87 = 309,863.87 : x
  2. Step 2: Convert to fraction form
    567,986.91/783,820.87 = 309,863.87/x
  3. Step 3: Cross multiply
    567,986.91x = 783,820.87 × 309,863.87
  4. Step 4: Simplify right side
    567,986.91x = 242,877,768,164.97
  5. Step 5: Solve for x
    x = 242,877,768,164.97/567,986.91
  6. Step 6: Final answer
    x = 427,611.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.