Home / 657,189.03-906,920.91-355,383.03

Finding the Fourth Proportional to 657,189.03, 906,920.91 and 355,383.03

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Solution

The fourth proportional to 657,189.03, 906,920.91 and 355,383.03 is: 490,428.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,189.03 : 906,920.91 = 355,383.03 : x
  2. Step 2: Convert to fraction form
    657,189.03/906,920.91 = 355,383.03/x
  3. Step 3: Cross multiply
    657,189.03x = 906,920.91 × 355,383.03
  4. Step 4: Simplify right side
    657,189.03x = 322,304,300,966.16
  5. Step 5: Solve for x
    x = 322,304,300,966.16/657,189.03
  6. Step 6: Final answer
    x = 490,428.61

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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.