Home / 500,996.72-691,403.28-286,206.50

Finding the Fourth Proportional to 500,996.72, 691,403.28 and 286,206.50

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Solution

The fourth proportional to 500,996.72, 691,403.28 and 286,206.50 is: 394,980.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,996.72 : 691,403.28 = 286,206.50 : x
  2. Step 2: Convert to fraction form
    500,996.72/691,403.28 = 286,206.50/x
  3. Step 3: Cross multiply
    500,996.72x = 691,403.28 × 286,206.50
  4. Step 4: Simplify right side
    500,996.72x = 197,884,112,857.32
  5. Step 5: Solve for x
    x = 197,884,112,857.32/500,996.72
  6. Step 6: Final answer
    x = 394,980.86

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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.