Home / 643,944.66-888,685.01-372,024.01

Finding the Fourth Proportional to 643,944.66, 888,685.01 and 372,024.01

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Solution

The fourth proportional to 643,944.66, 888,685.01 and 372,024.01 is: 513,417.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,944.66 : 888,685.01 = 372,024.01 : x
  2. Step 2: Convert to fraction form
    643,944.66/888,685.01 = 372,024.01/x
  3. Step 3: Cross multiply
    643,944.66x = 888,685.01 × 372,024.01
  4. Step 4: Simplify right side
    643,944.66x = 330,612,161,047.09
  5. Step 5: Solve for x
    x = 330,612,161,047.09/643,944.66
  6. Step 6: Final answer
    x = 513,417.04

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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.