Home / 810,898.36-1,215,166.56-389,682.16

Finding the Fourth Proportional to 810,898.36, 1,215,166.56 and 389,682.16

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Solution

The fourth proportional to 810,898.36, 1,215,166.56 and 389,682.16 is: 583,955.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,898.36 : 1,215,166.56 = 389,682.16 : x
  2. Step 2: Convert to fraction form
    810,898.36/1,215,166.56 = 389,682.16/x
  3. Step 3: Cross multiply
    810,898.36x = 1,215,166.56 × 389,682.16
  4. Step 4: Simplify right side
    810,898.36x = 473,528,729,860.57
  5. Step 5: Solve for x
    x = 473,528,729,860.57/810,898.36
  6. Step 6: Final answer
    x = 583,955.71

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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.