Home / 509,236.86-702,758.67-279,808.50

Finding the Fourth Proportional to 509,236.86, 702,758.67 and 279,808.50

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Solution

The fourth proportional to 509,236.86, 702,758.67 and 279,808.50 is: 386,142.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,236.86 : 702,758.67 = 279,808.50 : x
  2. Step 2: Convert to fraction form
    509,236.86/702,758.67 = 279,808.50/x
  3. Step 3: Cross multiply
    509,236.86x = 702,758.67 × 279,808.50
  4. Step 4: Simplify right side
    509,236.86x = 196,637,849,314.70
  5. Step 5: Solve for x
    x = 196,637,849,314.70/509,236.86
  6. Step 6: Final answer
    x = 386,142.22

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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.