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Finding the Fourth Proportional to 656,893.44, 906,524.75 and 385,038.40

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Solution

The fourth proportional to 656,893.44, 906,524.75 and 385,038.40 is: 531,359.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,893.44 : 906,524.75 = 385,038.40 : x
  2. Step 2: Convert to fraction form
    656,893.44/906,524.75 = 385,038.40/x
  3. Step 3: Cross multiply
    656,893.44x = 906,524.75 × 385,038.40
  4. Step 4: Simplify right side
    656,893.44x = 349,046,839,300.40
  5. Step 5: Solve for x
    x = 349,046,839,300.40/656,893.44
  6. Step 6: Final answer
    x = 531,359.91

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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.