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Finding the Fourth Proportional to 1,275,649.60, 1,917,621.60 and 904,244.80

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Solution

The fourth proportional to 1,275,649.60, 1,917,621.60 and 904,244.80 is: 1,359,306.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,649.60 : 1,917,621.60 = 904,244.80 : x
  2. Step 2: Convert to fraction form
    1,275,649.60/1,917,621.60 = 904,244.80/x
  3. Step 3: Cross multiply
    1,275,649.60x = 1,917,621.60 × 904,244.80
  4. Step 4: Simplify right side
    1,275,649.60x = 1,733,999,360,167.68
  5. Step 5: Solve for x
    x = 1,733,999,360,167.68/1,275,649.60
  6. Step 6: Final answer
    x = 1,359,306.94

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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.