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Finding the Fourth Proportional to 864,774.92, 1,297,959.74 and 438,609.80

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Solution

The fourth proportional to 864,774.92, 1,297,959.74 and 438,609.80 is: 658,319.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,774.92 : 1,297,959.74 = 438,609.80 : x
  2. Step 2: Convert to fraction form
    864,774.92/1,297,959.74 = 438,609.80/x
  3. Step 3: Cross multiply
    864,774.92x = 1,297,959.74 × 438,609.80
  4. Step 4: Simplify right side
    864,774.92x = 569,297,861,969.45
  5. Step 5: Solve for x
    x = 569,297,861,969.45/864,774.92
  6. Step 6: Final answer
    x = 658,319.12

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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.