Home / 1,127,279.52-1,690,427.76-426,372

Finding the Fourth Proportional to 1,127,279.52, 1,690,427.76 and 426,372

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Solution

The fourth proportional to 1,127,279.52, 1,690,427.76 and 426,372 is: 639,372.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127,279.52 : 1,690,427.76 = 426,372 : x
  2. Step 2: Convert to fraction form
    1,127,279.52/1,690,427.76 = 426,372/x
  3. Step 3: Cross multiply
    1,127,279.52x = 1,690,427.76 × 426,372
  4. Step 4: Simplify right side
    1,127,279.52x = 720,751,064,886.72
  5. Step 5: Solve for x
    x = 720,751,064,886.72/1,127,279.52
  6. Step 6: Final answer
    x = 639,372.09

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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.