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Finding the Fourth Proportional to 500,550.64, 690,206.36 and 318,974.94

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Solution

The fourth proportional to 500,550.64, 690,206.36 and 318,974.94 is: 439,832.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,550.64 : 690,206.36 = 318,974.94 : x
  2. Step 2: Convert to fraction form
    500,550.64/690,206.36 = 318,974.94/x
  3. Step 3: Cross multiply
    500,550.64x = 690,206.36 × 318,974.94
  4. Step 4: Simplify right side
    500,550.64x = 220,158,532,268.62
  5. Step 5: Solve for x
    x = 220,158,532,268.62/500,550.64
  6. Step 6: Final answer
    x = 439,832.69

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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.