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Finding the Fourth Proportional to 657,150.72, 906,867.36 and 355,344

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Solution

The fourth proportional to 657,150.72, 906,867.36 and 355,344 is: 490,374.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,150.72 : 906,867.36 = 355,344 : x
  2. Step 2: Convert to fraction form
    657,150.72/906,867.36 = 355,344/x
  3. Step 3: Cross multiply
    657,150.72x = 906,867.36 × 355,344
  4. Step 4: Simplify right side
    657,150.72x = 322,249,875,171.84
  5. Step 5: Solve for x
    x = 322,249,875,171.84/657,150.72
  6. Step 6: Final answer
    x = 490,374.38

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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.