Home / 509,426.76-763,939.98-172,374.60

Finding the Fourth Proportional to 509,426.76, 763,939.98 and 172,374.60

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Solution

The fourth proportional to 509,426.76, 763,939.98 and 172,374.60 is: 258,494.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,426.76 : 763,939.98 = 172,374.60 : x
  2. Step 2: Convert to fraction form
    509,426.76/763,939.98 = 172,374.60/x
  3. Step 3: Cross multiply
    509,426.76x = 763,939.98 × 172,374.60
  4. Step 4: Simplify right side
    509,426.76x = 131,683,848,476.51
  5. Step 5: Solve for x
    x = 131,683,848,476.51/509,426.76
  6. Step 6: Final answer
    x = 258,494.17

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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.