Home / 509,403.60-702,983.36-279,985.96

Finding the Fourth Proportional to 509,403.60, 702,983.36 and 279,985.96

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Solution

The fourth proportional to 509,403.60, 702,983.36 and 279,985.96 is: 386,384.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,403.60 : 702,983.36 = 279,985.96 : x
  2. Step 2: Convert to fraction form
    509,403.60/702,983.36 = 279,985.96/x
  3. Step 3: Cross multiply
    509,403.60x = 702,983.36 × 279,985.96
  4. Step 4: Simplify right side
    509,403.60x = 196,825,470,913.63
  5. Step 5: Solve for x
    x = 196,825,470,913.63/509,403.60
  6. Step 6: Final answer
    x = 386,384.14

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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.