Home / 500,333.18-690,460.08-273,978.68

Finding the Fourth Proportional to 500,333.18, 690,460.08 and 273,978.68

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Solution

The fourth proportional to 500,333.18, 690,460.08 and 273,978.68 is: 378,090.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,333.18 : 690,460.08 = 273,978.68 : x
  2. Step 2: Convert to fraction form
    500,333.18/690,460.08 = 273,978.68/x
  3. Step 3: Cross multiply
    500,333.18x = 690,460.08 × 273,978.68
  4. Step 4: Simplify right side
    500,333.18x = 189,171,341,311.09
  5. Step 5: Solve for x
    x = 189,171,341,311.09/500,333.18
  6. Step 6: Final answer
    x = 378,090.74

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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.