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Finding the Fourth Proportional to 621,062.34, 857,009.48 and 359,372.41

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Solution

The fourth proportional to 621,062.34, 857,009.48 and 359,372.41 is: 495,901.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,062.34 : 857,009.48 = 359,372.41 : x
  2. Step 2: Convert to fraction form
    621,062.34/857,009.48 = 359,372.41/x
  3. Step 3: Cross multiply
    621,062.34x = 857,009.48 × 359,372.41
  4. Step 4: Simplify right side
    621,062.34x = 307,985,562,220.45
  5. Step 5: Solve for x
    x = 307,985,562,220.45/621,062.34
  6. Step 6: Final answer
    x = 495,901.20

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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.