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Finding the Fourth Proportional to 638,018.07, 880,504.11 and 351,538.08

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Solution

The fourth proportional to 638,018.07, 880,504.11 and 351,538.08 is: 485,144.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,018.07 : 880,504.11 = 351,538.08 : x
  2. Step 2: Convert to fraction form
    638,018.07/880,504.11 = 351,538.08/x
  3. Step 3: Cross multiply
    638,018.07x = 880,504.11 × 351,538.08
  4. Step 4: Simplify right side
    638,018.07x = 309,530,724,261.51
  5. Step 5: Solve for x
    x = 309,530,724,261.51/638,018.07
  6. Step 6: Final answer
    x = 485,144.13

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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.