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Finding the Fourth Proportional to 818,887.92, 1,228,331.88 and 319,902

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Solution

The fourth proportional to 818,887.92, 1,228,331.88 and 319,902 is: 479,853.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,887.92 : 1,228,331.88 = 319,902 : x
  2. Step 2: Convert to fraction form
    818,887.92/1,228,331.88 = 319,902/x
  3. Step 3: Cross multiply
    818,887.92x = 1,228,331.88 × 319,902
  4. Step 4: Simplify right side
    818,887.92x = 392,945,825,075.76
  5. Step 5: Solve for x
    x = 392,945,825,075.76/818,887.92
  6. Step 6: Final answer
    x = 479,853.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.