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Finding the Fourth Proportional to 702,554.79, 969,514.90 and 392,461.43

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Solution

The fourth proportional to 702,554.79, 969,514.90 and 392,461.43 is: 541,590.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,554.79 : 969,514.90 = 392,461.43 : x
  2. Step 2: Convert to fraction form
    702,554.79/969,514.90 = 392,461.43/x
  3. Step 3: Cross multiply
    702,554.79x = 969,514.90 × 392,461.43
  4. Step 4: Simplify right side
    702,554.79x = 380,497,204,060.31
  5. Step 5: Solve for x
    x = 380,497,204,060.31/702,554.79
  6. Step 6: Final answer
    x = 541,590.79

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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.