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Finding the Fourth Proportional to 835,732.80, 1,253,128.50 and 266,980.32

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Solution

The fourth proportional to 835,732.80, 1,253,128.50 and 266,980.32 is: 400,320.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    835,732.80 : 1,253,128.50 = 266,980.32 : x
  2. Step 2: Convert to fraction form
    835,732.80/1,253,128.50 = 266,980.32/x
  3. Step 3: Cross multiply
    835,732.80x = 1,253,128.50 × 266,980.32
  4. Step 4: Simplify right side
    835,732.80x = 334,560,647,931.12
  5. Step 5: Solve for x
    x = 334,560,647,931.12/835,732.80
  6. Step 6: Final answer
    x = 400,320.11

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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.