Home / 919,740.20-1,269,266.10-557,087

Finding the Fourth Proportional to 919,740.20, 1,269,266.10 and 557,087

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Solution

The fourth proportional to 919,740.20, 1,269,266.10 and 557,087 is: 768,794.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,740.20 : 1,269,266.10 = 557,087 : x
  2. Step 2: Convert to fraction form
    919,740.20/1,269,266.10 = 557,087/x
  3. Step 3: Cross multiply
    919,740.20x = 1,269,266.10 × 557,087
  4. Step 4: Simplify right side
    919,740.20x = 707,091,643,850.70
  5. Step 5: Solve for x
    x = 707,091,643,850.70/919,740.20
  6. Step 6: Final answer
    x = 768,794.97

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1.5x scale

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.