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Finding the Fourth Proportional to 935,999.80, 1,403,999.70 and 404,558.80

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Solution

The fourth proportional to 935,999.80, 1,403,999.70 and 404,558.80 is: 606,838.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    935,999.80 : 1,403,999.70 = 404,558.80 : x
  2. Step 2: Convert to fraction form
    935,999.80/1,403,999.70 = 404,558.80/x
  3. Step 3: Cross multiply
    935,999.80x = 1,403,999.70 × 404,558.80
  4. Step 4: Simplify right side
    935,999.80x = 568,000,433,832.36
  5. Step 5: Solve for x
    x = 568,000,433,832.36/935,999.80
  6. Step 6: Final answer
    x = 606,838.20

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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.