Home / 856,581.51-1,284,824.85-287,903.75

Finding the Fourth Proportional to 856,581.51, 1,284,824.85 and 287,903.75

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Solution

The fourth proportional to 856,581.51, 1,284,824.85 and 287,903.75 is: 431,839.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,581.51 : 1,284,824.85 = 287,903.75 : x
  2. Step 2: Convert to fraction form
    856,581.51/1,284,824.85 = 287,903.75/x
  3. Step 3: Cross multiply
    856,581.51x = 1,284,824.85 × 287,903.75
  4. Step 4: Simplify right side
    856,581.51x = 369,905,885,984.06
  5. Step 5: Solve for x
    x = 369,905,885,984.06/856,581.51
  6. Step 6: Final answer
    x = 431,839.68

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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.