Home / 919,477.80-1,379,216.70-665,567.10

Finding the Fourth Proportional to 919,477.80, 1,379,216.70 and 665,567.10

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Solution

The fourth proportional to 919,477.80, 1,379,216.70 and 665,567.10 is: 998,350.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,477.80 : 1,379,216.70 = 665,567.10 : x
  2. Step 2: Convert to fraction form
    919,477.80/1,379,216.70 = 665,567.10/x
  3. Step 3: Cross multiply
    919,477.80x = 1,379,216.70 × 665,567.10
  4. Step 4: Simplify right side
    919,477.80x = 917,961,259,290.57
  5. Step 5: Solve for x
    x = 917,961,259,290.57/919,477.80
  6. Step 6: Final answer
    x = 998,350.65

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Double scale
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Similar ratio
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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.