Home / 1,121,185.80-1,680,778.80-411,048.36

Finding the Fourth Proportional to 1,121,185.80, 1,680,778.80 and 411,048.36

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Solution

The fourth proportional to 1,121,185.80, 1,680,778.80 and 411,048.36 is: 616,205.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,185.80 : 1,680,778.80 = 411,048.36 : x
  2. Step 2: Convert to fraction form
    1,121,185.80/1,680,778.80 = 411,048.36/x
  3. Step 3: Cross multiply
    1,121,185.80x = 1,680,778.80 × 411,048.36
  4. Step 4: Simplify right side
    1,121,185.80x = 690,881,369,262.77
  5. Step 5: Solve for x
    x = 690,881,369,262.77/1,121,185.80
  6. Step 6: Final answer
    x = 616,205.96

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1.5x scale

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.