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Finding the Fourth Proportional to 807,627.60, 1,210,080.60 and 638,499.60

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Solution

The fourth proportional to 807,627.60, 1,210,080.60 and 638,499.60 is: 956,673.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,627.60 : 1,210,080.60 = 638,499.60 : x
  2. Step 2: Convert to fraction form
    807,627.60/1,210,080.60 = 638,499.60/x
  3. Step 3: Cross multiply
    807,627.60x = 1,210,080.60 × 638,499.60
  4. Step 4: Simplify right side
    807,627.60x = 772,635,979,067.76
  5. Step 5: Solve for x
    x = 772,635,979,067.76/807,627.60
  6. Step 6: Final answer
    x = 956,673.57

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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.