Home / 529,715.28-731,028.32-287,997.11

Finding the Fourth Proportional to 529,715.28, 731,028.32 and 287,997.11

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Solution

The fourth proportional to 529,715.28, 731,028.32 and 287,997.11 is: 397,447.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,715.28 : 731,028.32 = 287,997.11 : x
  2. Step 2: Convert to fraction form
    529,715.28/731,028.32 = 287,997.11/x
  3. Step 3: Cross multiply
    529,715.28x = 731,028.32 × 287,997.11
  4. Step 4: Simplify right side
    529,715.28x = 210,534,043,488.16
  5. Step 5: Solve for x
    x = 210,534,043,488.16/529,715.28
  6. Step 6: Final answer
    x = 397,447.56

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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.