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Finding the Fourth Proportional to 638,344.10, 880,667.70 and 366,313.70

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Solution

The fourth proportional to 638,344.10, 880,667.70 and 366,313.70 is: 505,371.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,344.10 : 880,667.70 = 366,313.70 : x
  2. Step 2: Convert to fraction form
    638,344.10/880,667.70 = 366,313.70/x
  3. Step 3: Cross multiply
    638,344.10x = 880,667.70 × 366,313.70
  4. Step 4: Simplify right side
    638,344.10x = 322,600,643,657.49
  5. Step 5: Solve for x
    x = 322,600,643,657.49/638,344.10
  6. Step 6: Final answer
    x = 505,371.07

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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.