Home / 1,211,636.64-1,671,076.96-1,066,128.24

Finding the Fourth Proportional to 1,211,636.64, 1,671,076.96 and 1,066,128.24

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Solution

The fourth proportional to 1,211,636.64, 1,671,076.96 and 1,066,128.24 is: 1,470,393.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,636.64 : 1,671,076.96 = 1,066,128.24 : x
  2. Step 2: Convert to fraction form
    1,211,636.64/1,671,076.96 = 1,066,128.24/x
  3. Step 3: Cross multiply
    1,211,636.64x = 1,671,076.96 × 1,066,128.24
  4. Step 4: Simplify right side
    1,211,636.64x = 1,781,582,338,269.35
  5. Step 5: Solve for x
    x = 1,781,582,338,269.35/1,211,636.64
  6. Step 6: Final answer
    x = 1,470,393.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.