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Finding the Fourth Proportional to 657,048.96, 906,728.96 and 355,242.96

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Solution

The fourth proportional to 657,048.96, 906,728.96 and 355,242.96 is: 490,236.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,048.96 : 906,728.96 = 355,242.96 : x
  2. Step 2: Convert to fraction form
    657,048.96/906,728.96 = 355,242.96/x
  3. Step 3: Cross multiply
    657,048.96x = 906,728.96 × 355,242.96
  4. Step 4: Simplify right side
    657,048.96x = 322,109,079,668.12
  5. Step 5: Solve for x
    x = 322,109,079,668.12/657,048.96
  6. Step 6: Final answer
    x = 490,236.04

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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.