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Finding the Fourth Proportional to 690,005.87, 952,201.01 and 379,898.64

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Solution

The fourth proportional to 690,005.87, 952,201.01 and 379,898.64 is: 524,256.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,005.87 : 952,201.01 = 379,898.64 : x
  2. Step 2: Convert to fraction form
    690,005.87/952,201.01 = 379,898.64/x
  3. Step 3: Cross multiply
    690,005.87x = 952,201.01 × 379,898.64
  4. Step 4: Simplify right side
    690,005.87x = 361,739,871,001.31
  5. Step 5: Solve for x
    x = 361,739,871,001.31/690,005.87
  6. Step 6: Final answer
    x = 524,256.23

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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.