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Finding the Fourth Proportional to 646,876.54, 892,668.70 and 371,279.76

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Solution

The fourth proportional to 646,876.54, 892,668.70 and 371,279.76 is: 512,354.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,876.54 : 892,668.70 = 371,279.76 : x
  2. Step 2: Convert to fraction form
    646,876.54/892,668.70 = 371,279.76/x
  3. Step 3: Cross multiply
    646,876.54x = 892,668.70 × 371,279.76
  4. Step 4: Simplify right side
    646,876.54x = 331,429,820,695.51
  5. Step 5: Solve for x
    x = 331,429,820,695.51/646,876.54
  6. Step 6: Final answer
    x = 512,354.06

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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.