Home / 806,427.40-1,208,474.70-356,780.20

Finding the Fourth Proportional to 806,427.40, 1,208,474.70 and 356,780.20

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Solution

The fourth proportional to 806,427.40, 1,208,474.70 and 356,780.20 is: 534,654.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,427.40 : 1,208,474.70 = 356,780.20 : x
  2. Step 2: Convert to fraction form
    806,427.40/1,208,474.70 = 356,780.20/x
  3. Step 3: Cross multiply
    806,427.40x = 1,208,474.70 × 356,780.20
  4. Step 4: Simplify right side
    806,427.40x = 431,159,845,160.94
  5. Step 5: Solve for x
    x = 431,159,845,160.94/806,427.40
  6. Step 6: Final answer
    x = 534,654.26

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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.