Home / 638,192.57-880,705.89-347,804.21

Finding the Fourth Proportional to 638,192.57, 880,705.89 and 347,804.21

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Solution

The fourth proportional to 638,192.57, 880,705.89 and 347,804.21 is: 479,969.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,192.57 : 880,705.89 = 347,804.21 : x
  2. Step 2: Convert to fraction form
    638,192.57/880,705.89 = 347,804.21/x
  3. Step 3: Cross multiply
    638,192.57x = 880,705.89 × 347,804.21
  4. Step 4: Simplify right side
    638,192.57x = 306,313,210,171.25
  5. Step 5: Solve for x
    x = 306,313,210,171.25/638,192.57
  6. Step 6: Final answer
    x = 479,969.88

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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.