Home / 1,178,085.60-1,761,879.60-989,128.80

Finding the Fourth Proportional to 1,178,085.60, 1,761,879.60 and 989,128.80

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Solution

The fourth proportional to 1,178,085.60, 1,761,879.60 and 989,128.80 is: 1,479,286.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,085.60 : 1,761,879.60 = 989,128.80 : x
  2. Step 2: Convert to fraction form
    1,178,085.60/1,761,879.60 = 989,128.80/x
  3. Step 3: Cross multiply
    1,178,085.60x = 1,761,879.60 × 989,128.80
  4. Step 4: Simplify right side
    1,178,085.60x = 1,742,725,854,492.48
  5. Step 5: Solve for x
    x = 1,742,725,854,492.48/1,178,085.60
  6. Step 6: Final answer
    x = 1,479,286.27

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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.