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Finding the Fourth Proportional to 656,310, 905,708.16 and 354,504

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Solution

The fourth proportional to 656,310, 905,708.16 and 354,504 is: 489,215.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,310 : 905,708.16 = 354,504 : x
  2. Step 2: Convert to fraction form
    656,310/905,708.16 = 354,504/x
  3. Step 3: Cross multiply
    656,310x = 905,708.16 × 354,504
  4. Step 4: Simplify right side
    656,310x = 321,077,165,552.64
  5. Step 5: Solve for x
    x = 321,077,165,552.64/656,310
  6. Step 6: Final answer
    x = 489,215.71

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.