Home / 638,141.15-880,623.47-347,755.31

Finding the Fourth Proportional to 638,141.15, 880,623.47 and 347,755.31

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Solution

The fourth proportional to 638,141.15, 880,623.47 and 347,755.31 is: 479,896.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,141.15 : 880,623.47 = 347,755.31 : x
  2. Step 2: Convert to fraction form
    638,141.15/880,623.47 = 347,755.31/x
  3. Step 3: Cross multiply
    638,141.15x = 880,623.47 × 347,755.31
  4. Step 4: Simplify right side
    638,141.15x = 306,241,487,803.13
  5. Step 5: Solve for x
    x = 306,241,487,803.13/638,141.15
  6. Step 6: Final answer
    x = 479,896.16

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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.