Home / 774,837.56-1,069,402.74-645,571.01

Finding the Fourth Proportional to 774,837.56, 1,069,402.74 and 645,571.01

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Solution

The fourth proportional to 774,837.56, 1,069,402.74 and 645,571.01 is: 890,993.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,837.56 : 1,069,402.74 = 645,571.01 : x
  2. Step 2: Convert to fraction form
    774,837.56/1,069,402.74 = 645,571.01/x
  3. Step 3: Cross multiply
    774,837.56x = 1,069,402.74 × 645,571.01
  4. Step 4: Simplify right side
    774,837.56x = 690,375,406,958.57
  5. Step 5: Solve for x
    x = 690,375,406,958.57/774,837.56
  6. Step 6: Final answer
    x = 890,993.73

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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.