Home / 919,077.80-1,378,616.70-665,167.10

Finding the Fourth Proportional to 919,077.80, 1,378,616.70 and 665,167.10

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Solution

The fourth proportional to 919,077.80, 1,378,616.70 and 665,167.10 is: 997,750.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,077.80 : 1,378,616.70 = 665,167.10 : x
  2. Step 2: Convert to fraction form
    919,077.80/1,378,616.70 = 665,167.10/x
  3. Step 3: Cross multiply
    919,077.80x = 1,378,616.70 × 665,167.10
  4. Step 4: Simplify right side
    919,077.80x = 917,010,472,350.57
  5. Step 5: Solve for x
    x = 917,010,472,350.57/919,077.80
  6. Step 6: Final answer
    x = 997,750.65

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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.