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Finding the Fourth Proportional to 869,658.86, 1,199,620.83 and 546,857.90

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Solution

The fourth proportional to 869,658.86, 1,199,620.83 and 546,857.90 is: 754,344.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,658.86 : 1,199,620.83 = 546,857.90 : x
  2. Step 2: Convert to fraction form
    869,658.86/1,199,620.83 = 546,857.90/x
  3. Step 3: Cross multiply
    869,658.86x = 1,199,620.83 × 546,857.90
  4. Step 4: Simplify right side
    869,658.86x = 656,022,127,890.06
  5. Step 5: Solve for x
    x = 656,022,127,890.06/869,658.86
  6. Step 6: Final answer
    x = 754,344.21

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1.5x scale

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.