Home / 724,173.36-999,128.06-418,209.33

Finding the Fourth Proportional to 724,173.36, 999,128.06 and 418,209.33

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Solution

The fourth proportional to 724,173.36, 999,128.06 and 418,209.33 is: 576,995.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,173.36 : 999,128.06 = 418,209.33 : x
  2. Step 2: Convert to fraction form
    724,173.36/999,128.06 = 418,209.33/x
  3. Step 3: Cross multiply
    724,173.36x = 999,128.06 × 418,209.33
  4. Step 4: Simplify right side
    724,173.36x = 417,844,676,513.10
  5. Step 5: Solve for x
    x = 417,844,676,513.10/724,173.36
  6. Step 6: Final answer
    x = 576,995.37

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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.