Home / 638,016.03-880,478.28-351,536.04

Finding the Fourth Proportional to 638,016.03, 880,478.28 and 351,536.04

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Solution

The fourth proportional to 638,016.03, 880,478.28 and 351,536.04 is: 485,128.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,016.03 : 880,478.28 = 351,536.04 : x
  2. Step 2: Convert to fraction form
    638,016.03/880,478.28 = 351,536.04/x
  3. Step 3: Cross multiply
    638,016.03x = 880,478.28 × 351,536.04
  4. Step 4: Simplify right side
    638,016.03x = 309,519,847,857.21
  5. Step 5: Solve for x
    x = 309,519,847,857.21/638,016.03
  6. Step 6: Final answer
    x = 485,128.64

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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.