Home / 1,279,126.49-1,918,514.78-380,706.89

Finding the Fourth Proportional to 1,279,126.49, 1,918,514.78 and 380,706.89

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Solution

The fourth proportional to 1,279,126.49, 1,918,514.78 and 380,706.89 is: 571,008.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,126.49 : 1,918,514.78 = 380,706.89 : x
  2. Step 2: Convert to fraction form
    1,279,126.49/1,918,514.78 = 380,706.89/x
  3. Step 3: Cross multiply
    1,279,126.49x = 1,918,514.78 × 380,706.89
  4. Step 4: Simplify right side
    1,279,126.49x = 730,391,793,409.30
  5. Step 5: Solve for x
    x = 730,391,793,409.30/1,279,126.49
  6. Step 6: Final answer
    x = 571,008.26

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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.