Home / 420,514,694.40-580,304,102.40-234,878,419.20

Finding the Fourth Proportional to 420,514,694.40, 580,304,102.40 and 234,878,419.20

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Solution

The fourth proportional to 420,514,694.40, 580,304,102.40 and 234,878,419.20 is: 324,128,768.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,514,694.40 : 580,304,102.40 = 234,878,419.20 : x
  2. Step 2: Convert to fraction form
    420,514,694.40/580,304,102.40 = 234,878,419.20/x
  3. Step 3: Cross multiply
    420,514,694.40x = 580,304,102.40 × 234,878,419.20
  4. Step 4: Simplify right side
    420,514,694.40x = 136,300,910,226,986,912
  5. Step 5: Solve for x
    x = 136,300,910,226,986,912/420,514,694.40
  6. Step 6: Final answer
    x = 324,128,768.96

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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.