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Finding the Fourth Proportional to 476,810.81, 657,503.94 and 331,780.91

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Solution

The fourth proportional to 476,810.81, 657,503.94 and 331,780.91 is: 457,513.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,810.81 : 657,503.94 = 331,780.91 : x
  2. Step 2: Convert to fraction form
    476,810.81/657,503.94 = 331,780.91/x
  3. Step 3: Cross multiply
    476,810.81x = 657,503.94 × 331,780.91
  4. Step 4: Simplify right side
    476,810.81x = 218,147,255,541.79
  5. Step 5: Solve for x
    x = 218,147,255,541.79/476,810.81
  6. Step 6: Final answer
    x = 457,513.23

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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.