Home / 423,208.98-634,439.79-323,812.89

Finding the Fourth Proportional to 423,208.98, 634,439.79 and 323,812.89

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Solution

The fourth proportional to 423,208.98, 634,439.79 and 323,812.89 is: 485,433.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,208.98 : 634,439.79 = 323,812.89 : x
  2. Step 2: Convert to fraction form
    423,208.98/634,439.79 = 323,812.89/x
  3. Step 3: Cross multiply
    423,208.98x = 634,439.79 × 323,812.89
  4. Step 4: Simplify right side
    423,208.98x = 205,439,781,930.89
  5. Step 5: Solve for x
    x = 205,439,781,930.89/423,208.98
  6. Step 6: Final answer
    x = 485,433.42

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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.