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Finding the Fourth Proportional to 656,872.94, 906,484.26 and 355,066.94

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Solution

The fourth proportional to 656,872.94, 906,484.26 and 355,066.94 is: 489,992.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,872.94 : 906,484.26 = 355,066.94 : x
  2. Step 2: Convert to fraction form
    656,872.94/906,484.26 = 355,066.94/x
  3. Step 3: Cross multiply
    656,872.94x = 906,484.26 × 355,066.94
  4. Step 4: Simplify right side
    656,872.94x = 321,862,590,581.03
  5. Step 5: Solve for x
    x = 321,862,590,581.03/656,872.94
  6. Step 6: Final answer
    x = 489,992.16

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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.