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Finding the Fourth Proportional to 611,942.94, 841,486.59 and 531,229.28

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Solution

The fourth proportional to 611,942.94, 841,486.59 and 531,229.28 is: 730,496.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,942.94 : 841,486.59 = 531,229.28 : x
  2. Step 2: Convert to fraction form
    611,942.94/841,486.59 = 531,229.28/x
  3. Step 3: Cross multiply
    611,942.94x = 841,486.59 × 531,229.28
  4. Step 4: Simplify right side
    611,942.94x = 447,022,311,127.92
  5. Step 5: Solve for x
    x = 447,022,311,127.92/611,942.94
  6. Step 6: Final answer
    x = 730,496.72

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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.