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Finding the Fourth Proportional to 721,806.66, 996,116.67 and 415,859.00

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Solution

The fourth proportional to 721,806.66, 996,116.67 and 415,859.00 is: 573,898.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,806.66 : 996,116.67 = 415,859.00 : x
  2. Step 2: Convert to fraction form
    721,806.66/996,116.67 = 415,859.00/x
  3. Step 3: Cross multiply
    721,806.66x = 996,116.67 × 415,859.00
  4. Step 4: Simplify right side
    721,806.66x = 414,244,077,288.95
  5. Step 5: Solve for x
    x = 414,244,077,288.95/721,806.66
  6. Step 6: Final answer
    x = 573,898.94

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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.