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Finding the Fourth Proportional to 504,939.47, 696,581.64 and 300,875.90

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Solution

The fourth proportional to 504,939.47, 696,581.64 and 300,875.90 is: 415,068.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,939.47 : 696,581.64 = 300,875.90 : x
  2. Step 2: Convert to fraction form
    504,939.47/696,581.64 = 300,875.90/x
  3. Step 3: Cross multiply
    504,939.47x = 696,581.64 × 300,875.90
  4. Step 4: Simplify right side
    504,939.47x = 209,584,624,375.57
  5. Step 5: Solve for x
    x = 209,584,624,375.57/504,939.47
  6. Step 6: Final answer
    x = 415,068.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.