Home / 638,112.51-880,614.12-351,651.15

Finding the Fourth Proportional to 638,112.51, 880,614.12 and 351,651.15

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Solution

The fourth proportional to 638,112.51, 880,614.12 and 351,651.15 is: 485,288.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,112.51 : 880,614.12 = 351,651.15 : x
  2. Step 2: Convert to fraction form
    638,112.51/880,614.12 = 351,651.15/x
  3. Step 3: Cross multiply
    638,112.51x = 880,614.12 × 351,651.15
  4. Step 4: Simplify right side
    638,112.51x = 309,668,968,004.24
  5. Step 5: Solve for x
    x = 309,668,968,004.24/638,112.51
  6. Step 6: Final answer
    x = 485,288.98

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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.