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Finding the Fourth Proportional to 620,554.43, 856,376.73 and 344,938.16

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Solution

The fourth proportional to 620,554.43, 856,376.73 and 344,938.16 is: 476,021.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,554.43 : 856,376.73 = 344,938.16 : x
  2. Step 2: Convert to fraction form
    620,554.43/856,376.73 = 344,938.16/x
  3. Step 3: Cross multiply
    620,554.43x = 856,376.73 × 344,938.16
  4. Step 4: Simplify right side
    620,554.43x = 295,397,013,513.02
  5. Step 5: Solve for x
    x = 295,397,013,513.02/620,554.43
  6. Step 6: Final answer
    x = 476,021.12

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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.