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Finding the Fourth Proportional to 415,705.70, 622,001.55 and 296,039.30

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Solution

The fourth proportional to 415,705.70, 622,001.55 and 296,039.30 is: 442,950.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,705.70 : 622,001.55 = 296,039.30 : x
  2. Step 2: Convert to fraction form
    415,705.70/622,001.55 = 296,039.30/x
  3. Step 3: Cross multiply
    415,705.70x = 622,001.55 × 296,039.30
  4. Step 4: Simplify right side
    415,705.70x = 184,136,903,460.92
  5. Step 5: Solve for x
    x = 184,136,903,460.92/415,705.70
  6. Step 6: Final answer
    x = 442,950.15

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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.