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Finding the Fourth Proportional to 638,192.46, 880,705.71 and 347,804.04

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Solution

The fourth proportional to 638,192.46, 880,705.71 and 347,804.04 is: 479,969.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,192.46 : 880,705.71 = 347,804.04 : x
  2. Step 2: Convert to fraction form
    638,192.46/880,705.71 = 347,804.04/x
  3. Step 3: Cross multiply
    638,192.46x = 880,705.71 × 347,804.04
  4. Step 4: Simplify right side
    638,192.46x = 306,313,003,989.07
  5. Step 5: Solve for x
    x = 306,313,003,989.07/638,192.46
  6. Step 6: Final answer
    x = 479,969.64

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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.