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Finding the Fourth Proportional to 657,054.69, 906,735.43 and 355,248.69

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Solution

The fourth proportional to 657,054.69, 906,735.43 and 355,248.69 is: 490,243.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,054.69 : 906,735.43 = 355,248.69 : x
  2. Step 2: Convert to fraction form
    657,054.69/906,735.43 = 355,248.69/x
  3. Step 3: Cross multiply
    657,054.69x = 906,735.43 × 355,248.69
  4. Step 4: Simplify right side
    657,054.69x = 322,116,573,684.09
  5. Step 5: Solve for x
    x = 322,116,573,684.09/657,054.69
  6. Step 6: Final answer
    x = 490,243.17

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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.