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Finding the Fourth Proportional to 991,458.54, 1,486,728.54 and 801,451.98

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Solution

The fourth proportional to 991,458.54, 1,486,728.54 and 801,451.98 is: 1,201,806.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,458.54 : 1,486,728.54 = 801,451.98 : x
  2. Step 2: Convert to fraction form
    991,458.54/1,486,728.54 = 801,451.98/x
  3. Step 3: Cross multiply
    991,458.54x = 1,486,728.54 × 801,451.98
  4. Step 4: Simplify right side
    991,458.54x = 1,191,541,532,105.51
  5. Step 5: Solve for x
    x = 1,191,541,532,105.51/991,458.54
  6. Step 6: Final answer
    x = 1,201,806.72

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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.