Home / 806,428.40-1,208,476.20-356,781.20

Finding the Fourth Proportional to 806,428.40, 1,208,476.20 and 356,781.20

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Solution

The fourth proportional to 806,428.40, 1,208,476.20 and 356,781.20 is: 534,655.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,428.40 : 1,208,476.20 = 356,781.20 : x
  2. Step 2: Convert to fraction form
    806,428.40/1,208,476.20 = 356,781.20/x
  3. Step 3: Cross multiply
    806,428.40x = 1,208,476.20 × 356,781.20
  4. Step 4: Simplify right side
    806,428.40x = 431,161,588,807.44
  5. Step 5: Solve for x
    x = 431,161,588,807.44/806,428.40
  6. Step 6: Final answer
    x = 534,655.76

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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.