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Finding the Fourth Proportional to 642,957.90, 964,489.44 and 322,945.22

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Solution

The fourth proportional to 642,957.90, 964,489.44 and 322,945.22 is: 484,444.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,957.90 : 964,489.44 = 322,945.22 : x
  2. Step 2: Convert to fraction form
    642,957.90/964,489.44 = 322,945.22/x
  3. Step 3: Cross multiply
    642,957.90x = 964,489.44 × 322,945.22
  4. Step 4: Simplify right side
    642,957.90x = 311,477,254,388.48
  5. Step 5: Solve for x
    x = 311,477,254,388.48/642,957.90
  6. Step 6: Final answer
    x = 484,444.24

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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.