Home / 657,200.20-906,935.90-355,394.20

Finding the Fourth Proportional to 657,200.20, 906,935.90 and 355,394.20

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Solution

The fourth proportional to 657,200.20, 906,935.90 and 355,394.20 is: 490,443.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,200.20 : 906,935.90 = 355,394.20 : x
  2. Step 2: Convert to fraction form
    657,200.20/906,935.90 = 355,394.20/x
  3. Step 3: Cross multiply
    657,200.20x = 906,935.90 × 355,394.20
  4. Step 4: Simplify right side
    657,200.20x = 322,319,760,010.63
  5. Step 5: Solve for x
    x = 322,319,760,010.63/657,200.20
  6. Step 6: Final answer
    x = 490,443.79

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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.