Home / 500,276.36-690,388.98-273,942.92

Finding the Fourth Proportional to 500,276.36, 690,388.98 and 273,942.92

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Solution

The fourth proportional to 500,276.36, 690,388.98 and 273,942.92 is: 378,045.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,276.36 : 690,388.98 = 273,942.92 : x
  2. Step 2: Convert to fraction form
    500,276.36/690,388.98 = 273,942.92/x
  3. Step 3: Cross multiply
    500,276.36x = 690,388.98 × 273,942.92
  4. Step 4: Simplify right side
    500,276.36x = 189,127,173,117.02
  5. Step 5: Solve for x
    x = 189,127,173,117.02/500,276.36
  6. Step 6: Final answer
    x = 378,045.39

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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.