Home / 1,091,605.40-1,637,331.35-408,361.89

Finding the Fourth Proportional to 1,091,605.40, 1,637,331.35 and 408,361.89

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Solution

The fourth proportional to 1,091,605.40, 1,637,331.35 and 408,361.89 is: 612,514.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091,605.40 : 1,637,331.35 = 408,361.89 : x
  2. Step 2: Convert to fraction form
    1,091,605.40/1,637,331.35 = 408,361.89/x
  3. Step 3: Cross multiply
    1,091,605.40x = 1,637,331.35 × 408,361.89
  4. Step 4: Simplify right side
    1,091,605.40x = 668,623,724,642.25
  5. Step 5: Solve for x
    x = 668,623,724,642.25/1,091,605.40
  6. Step 6: Final answer
    x = 612,514.12

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Double scale
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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.