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Finding the Fourth Proportional to 1,275,609.60, 1,917,561.60 and 904,204.80

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Solution

The fourth proportional to 1,275,609.60, 1,917,561.60 and 904,204.80 is: 1,359,246.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,609.60 : 1,917,561.60 = 904,204.80 : x
  2. Step 2: Convert to fraction form
    1,275,609.60/1,917,561.60 = 904,204.80/x
  3. Step 3: Cross multiply
    1,275,609.60x = 1,917,561.60 × 904,204.80
  4. Step 4: Simplify right side
    1,275,609.60x = 1,733,868,403,015.68
  5. Step 5: Solve for x
    x = 1,733,868,403,015.68/1,275,609.60
  6. Step 6: Final answer
    x = 1,359,246.91

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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.