Home / 1,173,966.80-1,620,080.16-664,768.40

Finding the Fourth Proportional to 1,173,966.80, 1,620,080.16 and 664,768.40

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Solution

The fourth proportional to 1,173,966.80, 1,620,080.16 and 664,768.40 is: 917,383.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173,966.80 : 1,620,080.16 = 664,768.40 : x
  2. Step 2: Convert to fraction form
    1,173,966.80/1,620,080.16 = 664,768.40/x
  3. Step 3: Cross multiply
    1,173,966.80x = 1,620,080.16 × 664,768.40
  4. Step 4: Simplify right side
    1,173,966.80x = 1,076,978,095,834.94
  5. Step 5: Solve for x
    x = 1,076,978,095,834.94/1,173,966.80
  6. Step 6: Final answer
    x = 917,383.78

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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.