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Finding the Fourth Proportional to 642,955.89, 964,486.44 and 322,943.22

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Solution

The fourth proportional to 642,955.89, 964,486.44 and 322,943.22 is: 484,441.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,955.89 : 964,486.44 = 322,943.22 : x
  2. Step 2: Convert to fraction form
    642,955.89/964,486.44 = 322,943.22/x
  3. Step 3: Cross multiply
    642,955.89x = 964,486.44 × 322,943.22
  4. Step 4: Simplify right side
    642,955.89x = 311,474,356,579.94
  5. Step 5: Solve for x
    x = 311,474,356,579.94/642,955.89
  6. Step 6: Final answer
    x = 484,441.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.