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Finding the Fourth Proportional to 694,079.34, 957,824.10 and 388,156.20

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Solution

The fourth proportional to 694,079.34, 957,824.10 and 388,156.20 is: 535,652.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,079.34 : 957,824.10 = 388,156.20 : x
  2. Step 2: Convert to fraction form
    694,079.34/957,824.10 = 388,156.20/x
  3. Step 3: Cross multiply
    694,079.34x = 957,824.10 × 388,156.20
  4. Step 4: Simplify right side
    694,079.34x = 371,785,362,924.42
  5. Step 5: Solve for x
    x = 371,785,362,924.42/694,079.34
  6. Step 6: Final answer
    x = 535,652.54

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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.