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Finding the Fourth Proportional to 735,338.40, 1,101,841.20 and 485,728.80

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Solution

The fourth proportional to 735,338.40, 1,101,841.20 and 485,728.80 is: 727,822.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    735,338.40 : 1,101,841.20 = 485,728.80 : x
  2. Step 2: Convert to fraction form
    735,338.40/1,101,841.20 = 485,728.80/x
  3. Step 3: Cross multiply
    735,338.40x = 1,101,841.20 × 485,728.80
  4. Step 4: Simplify right side
    735,338.40x = 535,196,003,866.56
  5. Step 5: Solve for x
    x = 535,196,003,866.56/735,338.40
  6. Step 6: Final answer
    x = 727,822.73

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1.5x scale

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.